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Service Letter #024
Date: January 31, 2007
Subject: This Service Letter announces a new revision policy for all Kelly Aerospace Power Systems manuals. The new policy no longer offers subscription but makes revisions available on a "pay per revision" basis. View Bulletin

Cabin Heaters

Service Letter #A-129
Date: March 27, 2008
Subject: This Service Information Letter provides identification criteria and announces the change and availability of a replacement Overheat Limit switch for the continued support and maintenance of Kelly Aerospace Power Systems (Janitrol) B Series aircraft cabin heaters.

Service Letter #A-128 Rev. A
Date: February 4, 2008
Subject: Kelly Aerospace Power Systems is pleased to announce that Revision A of the 94E47 B series heater overhaul manual is now available. This revision corrects minor errors and adds models to the IPC.

Service Letter #A-127 Rev. A
Date: February 4, 2008
Subject: Kelly Aerospace Power Systems is pleased to announce that Revision A of the 24E25-1 B series heater overhaul manual is now available. This revision corrects minor errors and adds models to the IPC..

Service Bulletin #25
Date: February 9, 2007
Subject: This Service Bulletin supercedes the old Midland Ross (JAD) SB 76 regarding the option of disabling B Series aircraft heaters in lieu of repair or replacement. This new bulletin states disabling as a temporary option which must be remedied within 24 months.

Service Bulletin #24
Date: February 8, 2007
Subject: This Service Bulletin supercedes the old Midland Ross (JAD) SB 73 regarding the welding of B Series aircraft heater combustion air tubes. This new bulletin continues to prohibit any repair by welding.

Service Letter #023
Date: Jan 31, 2007
Subject: This Service Letter announces the availability of B Series Aircraft Heater Overhaul and Service manuals. P/N 24E25-1 has been expanded and reissued for standard tube heaters and P/N 94E47 has been issued for extended life tube heaters. The new manuals now contain an IPC.

Service Bulletin #A-101 Rev. E
Date: December 23, 2005
Subject: B-Series Heaters - Supersedure Data
Advises users of improvements and recommend upgade of their particular Heater at Next Major Overhaul. Reduce Field problems with older technology Heaters through supersedure to later, improved designs.

Service Bulletin #A-102
Date: September 1994
Subject: Janitrol B-Series Aircraft Heaters - 42D36 Combustion Air Pressure Switch
Aircraft installations of B-Series Heaters (B1500, B2030, B3040, B4050) have experienced field failures of the 42D36 Combustion Air (C/A) Pressure Switch due to over adjustment and consequent de-coupling of the pressure sensing spring. Bulletin requires users to check and adjust their C/A switch by the proper procedure.

Service Bulletin #A-103 Rev. A
Date: February 1998
Subject: B-Series Heaters - Replacement of 42D36 Switch Series
New Switch (P/N 94E42) upgrade recommendation. FAA AD-NOTE #96-20-07

Service Bulletin #A-104 Rev. B
Date: March 2001
Subject: B-Series Heaters - Supersedure Data
Combustion Air & Ventilation Air Blower Motors

Service Instruction #A-105 Rev. B
Date: March 21, 2003
Subject: Factory Rebuilt Janitrol Heaters
Document Procedure For Installation of New Factory Rebuilt Janitrol Heaters

Service Instruction #A-106 Rev. A
Date: March 21, 2003
Subject: Recommended Time Between Overhaul (TBO) Period and Service Intervals for Extended Life (EL) Janitrol Heaters.
Models B2500, B3500, and B4500

Service Bulletin #A-107A
Date: September 6, 2002
Subject: Inspection of Fuel Regulator Shutoff Valve as Used With Kelly Aerospace Devices Combustion Heaters, Models B1500-B4500
This revision of Kelly Aerospace Service Bulletin No A-107 incorporates modifications to the pressure test procedure described in Sections 3 and 4. Recurrent inspection requirements are added to Section 7. A dark highlight bar in the left-hand margin denotes change locations.

Alternate Means of Compliance for AD 2001-08-01FAA Letter dated May 10, 2001*

AD2004-25-16R1 Eliminates the requirement to re-stamp the regulator body with a date of inspection code as found in step 6 of SB A-107AAirworthiness Directive 2004-25-16 R1*

Service Bulletin #A-108
Date: September 6, 2002
Subject: New Regulator Valve Approved for Use in Kelly Aerospace B3500 Series Heaters Installed in Piper PA-31-350.

Service Information Letter #A-110B
Date: December 20, 2004
Subject: Recommended Service/Inspection for Model 91E93-1 & 91E92-1 Heater.
In response to recent complaints of leakage on dual fuel pump installations outside of the original SIL A-110A timeframe. Kelly Aerospace, Inc. recommends an inspection of all model 91E93-1 (12 volt) and 91E92-1 (24-volt) aircraft heater fuel pumps.

Service Information Letter #A-120
Date: May 30, 2006
Subject: Improved Air Pressure Switch - 94E42.
Kelly Aerospace Power Systems is pleased to announce the availability of an improved air pressure switch which will improve the reliability of cabin heater operation.

Electrical Accessories

*NEW* Service Bulletin #033
Date: July 11, 2008
Subject: This Service Bulletin is being issued to mandate the replacement of both the fan and pulley assemblies on the existing ES7024-11 (TCM 656872) & ES7024-14 (TCM 657199) alternators and to announce the availability of an improved pulley assembly which when installed will remedy a cracked fan condition.

Service Letter #25
Date: February 12, 2008
Subject: This service letter announces the supercedure of certain Kelly Aerospace Power Systems Magnaflite series starters with new E & X Drive series starters.

Service Information Letter #A-126
Date: November 16, 2007
Subject: This SIL (Service Information Letter) provides recommended methods for establishing eligibility when installing current or new Kelly Aerospace Inc. starters should the FAA 8130-3 be marked NA in the eligibility block.

Service Information Letter #A-125 Rev. A
Date: February 6, 2008
Subject: This Service Information Letter entails terminal connection instructions for the ES-6000 & ES-7000 series alternator. (revises torque call out in step 4 and instructions in step 9)

Service Information Letter #A-122 OE-A2 Rev. 3
Date: February 23, 2007
Subject: This Service Information Letter announces the availability of Rev. 03 of the OE-A2 Overhaul Manual for Aircraft Alternator and Starters.

Service Bulletin #016 Rev. A
Date: April 28, 2003
Subject: Notifcation of Part Number Supersedure for Factory New Alternators Incorporating Improved Slip Ring End Bearing
Factory new alernators incorporating an improved slip ring end bearing are available for ALE, ALT, ALU, ALX, ALY, ALZ, ANG Series, ES-4032, and ES-4039 Model Alternators.

Service Bulletin #017 Rev. A
Date: April 28, 2003
Subject: Replacement of Slip Ring End Bearing
Service experience has indicated the roller element bearing used in the slip ring end of the ALE, ALT, ALU, ALX, ALY, ALZ, ANG series, ES-4032, and ES-4039 alternators may be subject to excessive wear which could result in loss of alternator performance.

Service Bulletin #018 Rev. A
Date: April 28, 2003
Subject: Part Number Supersedure For Electrosystems Alternators
Factory New ALE, ALT, ALU, ALX, ALY, ALZ, ANG Series, ES-4032, and ES-4039 Model Alternators Effected.

Service Information #0101
Date: October 5, 2001
Subject: VR286, VR288 & VR710A Paralleling Procedure
This Service Instruction provides information for installation of alternators in parallel.

Service Bulletin #A-112 Rev. A
Date: November 24, 2003
Subject: Kelly Aerospace Power Systems is initiating a recall of the following Starters due to potential failure of the drive gear assembly. Customers owning starters affected by this Service Bulletin may also experience actuation difficulties with the starter's bendix drive assembly. This could include failure of the bendix to properly retract after engine start or failure of the bendix to properly extend at the beginning of the starting cycle. Either condition may result in damage to the starter or the engine fly wheel. The bendix assembly cannot be field repaired. The starter bendix should be replaced with a factory reconditioned or factory new unit.
MODELS AFFECTED: MHB-6014, -6014R, -6016, -6016R, -6018, -6018R; MMU-6001; MZ-6204, -6220, -6220R, -6222, -6222R, -6224, -6226 Starters. Only those assemblies itemized in this Bulletin are subject to this recall.

Service Bulletin #021.
Date: February 26, 2004
Subject: 1) Notification of the applicability of the Kelly Aerospace OE-A2 Starter and Alternator Overhaul Manual. 2) Notification that the OE-A1 Overhaul Manual is superceded and obsolete.
To notify and clarify the relevant IFCA data to be used for the overhaul of Kelly Aerospace Electrical accessories. Products Affected: All Kelly Aerospace Electrical Accessories (Starters & Alternators). Compliance: Effective Immediately

Service Information Letter #A-115.
Date: February 16, 2005
Subject: Recommended Service/Inspection for Alternator Series ALE, ALU, ALY, ALX
In response to recent complaints of nuisance tripping of the voltage regulator at overvoltage, Kelly Aerospace has completed an investigation of this condition.

Service Information Letter #A-116.
Date: April 14, 2005
Subject: Recommended Alternators Brush Holder Replacement For Model ALE, ALH, ALT, ALU, ALX, ALY, ALZ Series
Since implementation of the current one piece brush holder assembly for the above series alternators, maintenance personnel have complained of difficulty in installing or removing the assembly. Kelly Aerospace has designed a new two piece brush holder which is superior in construction and designed to ease both installation and removal during routine maintenance. These new brush holders are offered as a product improvement and are considered an alternate but will supercede the current brush holder assembly as field stock is depleted.

Service Information Letter #A-118.
Date: February 9, 2006
Subject: Replacement Bendix Drive Shaft MZ-326A.
Clarifies the use of the Bendix starter drive shaft KAPS P/N 326 and 326A. Part number 326A is produced in two interchangeable versions.

Service Information Letter #A-119.
Date: March 24, 2006
Subject: Voltage Regulator Adjustment - VR515GA.
Clarifies the access, adjustment procedures and specifications for the VR515GA and VR515GA-1 voltage regulators.

Fuel & Filtration

Service Letter #027
Date: April 17, 2008
Subject: This service letter is intended to clarify the confusion pertaining to the use of FAA/PMA approved KAPS metal floats in Precision Airmotive/Facet/Marvel Schebler float style carburetors.

Service Bulletin #032
Date: March 13, 2008
Subject: It has come to the attention of Kelly Aerospace Power Systems that the two screws that secure the throttle valve plate to the throttle valve shaft may not be of proper length (short). The subject screw KAPS part number CF15-A23, has been sold as individual parts, in KAPS Carburetor Quick Kits, in KAPS Throttle Shaft Kits, and may have been installed in certain carburetors overhauled by Kelly Aerospace Power Systems. This Service Bulletin is being issued to mandate the inspection for, and replacement of, short throttle valve plate attachment screws KAPS P/N CF15-A23.

Service Letter #026
Date: March 13, 2008
Subject: This service letter is intended to alert Kelly Aerospace customers to Precision's Mandatory Service Bulletin and to advise that KAPS parts (including the subject gasket) that may have been used in the the above servos, are not affected in any way.

Service Bulletin #028 Rev. A
Date: Aug 28, 2007
Subject: This Service Bulletin is being issued to mandate the replacement of affected fuel pump diaphragm and plunger assemblies part number CFRB15985 manufactured and sold between September of 2005 to July 25, 2007.

Service Information Letter #A-123 Rev. C
Date: May 29, 2007
Subject: This SIL announces the availability of Rev C for the 200201-0000 Fuel Pump overhaul manual.

Service Letter #020
Date: June 1, 2006
Subject: Availability of Overhaul and Maintenance Manual for the KAPS 200F and 201F fuel pumps.
Kelly Aerospace Power Systems is pleased to announce the availability of the Overhaul and Maintenance Manual for the KAPS 200F and 201F fuel pumps P/N 200201-0000.

Service Informational Letter #CF-98001
Date: September 15, 1998
Subject: Faulty RSA-10 Fuel Diaphram Assemblies (P/N: 2541803)
Recall of Precision Airmotive fuel diaphram assemblies manufactured from 9-30-97 through 5-12-98.

Sales Bulletin #MB-2022
Date: May 2, 2000
Subject: Consolidated Fuel Systems, Inc. Overhauled Romes / Crane Fuel Pump Product
Lycoming has issued a Mandatory Service Bulletin which requires valve housing replacement.

Service Bulletin #MB-2026
Date: March 1, 2002
Subject: Carburetor "Quick Kits"
Carburetor "Quick Kit" Price Reduction

Service Information Letter #A-109
Date: September 17, 2002
Subject: 200F Series Fuel Pump Replacement Notification

Service Information Letter #A-114 Rev. A
Date: September 21, 2007
Subject: Kelly Aerospace Power Systems Oil Filter Application Eligibility.

Mandatory Service Bulletin #113
Date: August 6, 2004
Subject: Isolated reports of minor fuel weepage from the relief valve housing at the parting surface on certain Kelly Aerospace engine driven fuel pumps have come to our attention. This condition has been noticed at the upper end of fuel pressure on Piper Chieftain Aircraft that use Kelly Aerospace Power Systems pumps. The purpose of this service bulletin is to provide information to Piper Chieftain owners, operators, and maintenance personnel regarding the inspection and factory repair of the KAPS 200F Series fuel pumps.
All Navajo Chieftain Aircraft with the New Kelly Aerospace 200F-5002 (62E23186), 200F-5003 (62E23188) and 200F-5004 (62E23187) Fuel Pump(s) installed. NOTE: This bulletin is applicable only to Chieftain* (PA-31-350) Aircraft with pumps bearing the S/Ns found in Table 1 below. Pumps installed on aircraft other than the PA-31-350 are not subject to this bulletin regardless of S/N inclusion in Table 1 below.

Turbocharging Systems

*NEW* Service Information Letter #A-131
Date: June 2, 2008
Subject: This Service Information Letter requires the inspection of KAPS turbocharger P/N 466304-0003 data tags for looseness and applies a remedy. It also requires that a logbook statement be inserted which clearly states the turbocharger part number, serial number, and location.

*NEW* Service Information Letter #A-130 Rev. A
Date: May 21, 2008
Subject: This Service Information Letter announces the availability of Rev. A of the P/N 400999-0000 Overhaul Manual for Aircraft Turbocharger, Valves & Controllers and serves to notify users of this manual of the current revision status.

Service Bulletin #031
Date: February 28, 2008
Subject: This Service Bulletin is being issued to mandate the inspection and/or replacement of affected turbocharger turbine housing(s) P/N 441977-0023 & 441977-0025. These were sold on individual turbocharger spares or as piece parts and may be used on Lycoming or TCM engines.

Service Bulletin #030 Rev. A
Date: April 1, 2008
Subject: This Service Bulletin is being issued to mandate the inspection and/or replacement of affected turbocharger turbine housing(s) P/N 441977-0023 & 441977-0025 found on KAPS turbocharger P/N's 465680-0004, 465930-0002, 466412-0003, 465930-0003, and 466412-0004 as used on TCM engines.

Service Bulletin #029
Date: February 1, 2008
Subject: This Service Bulletin is being issued to mandate the inspection and/or replacement of affected turbocharger turbine housing(s) P/N 441977-25 as found on KAPS turbocharger P/N 409170-0001 (Lyc LW-12463) per the serial numbers listed in the table.

Service Bulletin #027
Date: July 25, 2007
Subject: This Service Bulletin is being issued to mandate the replacement of turbocharger part number 466304-0003 (TCM 646677) for an out of balance condition of compressor and turbine wheel assembly. Teledyne Continental Motors engines used on turbocharged Colombia Aircraft,Mooney Aircraft, and Piper Malibu aircraft may be affected.

Service Bulletin #026 Rev. B
Date: July 27, 2007
Subject: Service Bulletin 026 Rev. B revises the serial number effectivity list by adding S/N KCN01116. This Service Bulletin is being issued to mandate the replacement of turbocharger part number 466304-0003 for an out of balance condition of compressor and turbine wheel assembly. Cirrus Design aircraft with the Tornado Alley STC installation are affected.

Service Information Letter #A-121
Date: March 15, 2007
Subject: Procedure for returning valves & controls test set for calibration or repair.

Service Letter #021
Date: Jan. 5, 2007
Subject: We are pleased to announce that a new Turbocharger Valves & Controls Service & Overhaul Manual (P/N 400999-0000) has been issued, superceding several Garrett/Honeywell Manuals. The new manual contains service and overhaul instructions, calibration data, test box operation and an illustrated parts catalog.

Service Information Letter #A-117
Date: Nov. 28, 2006
Subject: This Service Information Letter alerts those who handle or maintain THO8A series turbochargers on specifics of handling, shipping, and storing this particular unit prior to, during or after any service.

Sales Bulletin #MB-2021
Date: April 25, 2000
Subject: Warranty Consideration for Allied Signal/Honeywell Manufactured turbocharger Valves & Controller Products

Service Letter #019 Rev. B
Date: May 19, 2006
Subject: Reissue and Supercedure of Turbocharger Overhaul manual.

Service Bulletin #020
Date: October 17, 2001
Subject: 406610-9005 (Cessna P/N: C295001-0101) Turbochargers with missing anti-rotation pins.
Only those RAJAY (formally GARRETT) Model TE0659 Turbochargers found to have the Serial Numbers indicated in this Bulletin.

AD2002-24-07
Date: January 17, 2003
Subject: RAJAY Scavenge Pump Replacement
Replacement of RAJAY Scavenge Pump P/N: 101633-01, -02 within 50 hours of flight time from Jan. 17, 2003.

Customer Information Bulletin #CIB-2008
Date: January 30, 2003
Subject: Attention Aerostar Owners - Replacement of Aerostar Turbocharger Oil Scavenge Pumps
To provide Aerostar Owners with an FAA approved means of compliance with SB600-131A (AD2002-24-07).

Service Information Letter #A-111
Date: February 7, 2003
Subject: Recommended Service/Inspection for Cessna 402C Exhaust By-Pass Valve Assembly
This bulletin applies only to the Cessna 402C incorporating the Kelly Aerospace Power Systems (RAJAY/Garrett) Exhaust By-Pass Valve P/N: 470908-9013 (Cessna P/N: C165006-0107).

Service Bulletin #022
Date: August 6, 2004
Subject: Recommended Service / Inspection. Products Affected: P/N: 46C19836 (466011-0002) Turbocharger, bearing the Serial Numbers found in this Bulletin.
Due to isolated reports of premature bearing wear/failures in Part Number 46C19836 (466011-0002) turbochargers, Kelly Aerospace Power Systems recommends an inspection of suspect turbochargers bearing the following Serial Numbers.

Service Bulletin #023
Date: February 8, 2006
Subject: Turbocharger System Operational Tests
Certain tests are required to be performed after any repair or overhaul of Kelly Aerospace turbochargers prior to returning the aircraft or rotorcraft to service.