# Lycoming IO-390-A1A6

- Type: Engine model (FAA registry)
- Registry code: 41602
- Manufacturer (registry): LYCOMING
- Model: IO-390-A1A6
- Engine type: Reciprocating
- Power: 210 hp
- Data sheet: [TCDS E00006NY](https://openairdocs.org/tcds/E00006NY) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 20 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-390-a1a6

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009

Historical (superseded or no longer in force):

- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024

## Information bulletins (advisory) (2)

- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014

## Registered aircraft (20)

- [N108SM](https://openairdocs.org/aircraft/N108SM): [Magill Stanley J Trustee](https://openairdocs.org/faa-owner/MAGILL%20STANLEY%20J%20TRUSTEE), [Santa Ana, CA](https://openairdocs.org/faa-place/CA/Santa%20Ana), built 1999, S/N MK0240
- [N1142G](https://openairdocs.org/aircraft/N1142G): [Morgan Robert Brian](https://openairdocs.org/faa-owner/MORGAN%20ROBERT%20BRIAN), [Ozark, MO](https://openairdocs.org/faa-place/MO/Ozark), built 1981, S/N 24-1172
- [N121PK](https://openairdocs.org/aircraft/N121PK): [Twb LLC](https://openairdocs.org/faa-owner/TWB%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2012, S/N 7365
- [N13VF](https://openairdocs.org/aircraft/N13VF): [Caldwell Daniel E](https://openairdocs.org/faa-owner/CALDWELL%20DANIEL%20E), [Punta Gorda, FL](https://openairdocs.org/faa-place/FL/Punta%20Gorda), built 2011, S/N 81625
- [N1410J](https://openairdocs.org/aircraft/N1410J): [Air Otto Corp](https://openairdocs.org/faa-owner/AIR%20OTTO%20CORP), [Lake Katrine, NY](https://openairdocs.org/faa-place/NY/Lake%20Katrine), built 1975, S/N 410
- [N1443J](https://openairdocs.org/aircraft/N1443J): [Borden John E P Jr](https://openairdocs.org/faa-owner/BORDEN%20JOHN%20E%20P%20JR), [Boston, MA](https://openairdocs.org/faa-place/MA/Boston), S/N 443
- [N146JC](https://openairdocs.org/aircraft/N146JC): [Knapp David](https://openairdocs.org/faa-owner/KNAPP%20DAVID), [Green Cove Springs, FL](https://openairdocs.org/faa-place/FL/Green%20Cove%20Springs), built 2011, S/N 7356
- [N177P](https://openairdocs.org/aircraft/N177P): [Floyd E Wicks](https://openairdocs.org/faa-owner/FLOYD%20E%20WICKS), [Laurelville, OH](https://openairdocs.org/faa-place/OH/Laurelville), built 1975, S/N 177RG0785
- [N17L](https://openairdocs.org/aircraft/N17L): [Gkd Corp](https://openairdocs.org/faa-owner/GKD%20CORP), [North Lakewood, WA](https://openairdocs.org/faa-place/WA/North%20Lakewood), built 2011, S/N 7346
- [N259KC](https://openairdocs.org/aircraft/N259KC): [Cleversley Keith](https://openairdocs.org/faa-owner/CLEVERSLEY%20KEITH), [Cardiff By The Sea, CA](https://openairdocs.org/faa-place/CA/Cardiff%20By%20The%20Sea), S/N 7361
- [N375PS](https://openairdocs.org/aircraft/N375PS): [Ovitt Keith A](https://openairdocs.org/faa-owner/OVITT%20KEITH%20A), [Brentwood, TN](https://openairdocs.org/faa-place/TN/Brentwood), built 2007, S/N 7195
- [N37FT](https://openairdocs.org/aircraft/N37FT): [Harrison James Gregory](https://openairdocs.org/faa-owner/HARRISON%20JAMES%20GREGORY), [Cordova, TN](https://openairdocs.org/faa-place/TN/Cordova), built 2010, S/N 7176
- [N418BW](https://openairdocs.org/aircraft/N418BW): [Wright William E](https://openairdocs.org/faa-owner/WRIGHT%20WILLIAM%20E), [Eustis, FL](https://openairdocs.org/faa-place/FL/Eustis), built 2011, S/N 82543
- [N4274L](https://openairdocs.org/aircraft/N4274L): [Lakes Loopers LLC](https://openairdocs.org/faa-owner/LAKES%20LOOPERS%20LLC), [Bellevue, WA](https://openairdocs.org/faa-place/WA/Bellevue), built 2012, S/N 7360
- [N529GP](https://openairdocs.org/aircraft/N529GP): [Flying Montana LLC](https://openairdocs.org/faa-owner/FLYING%20MONTANA%20LLC), [Bozeman, MT](https://openairdocs.org/faa-place/MT/Bozeman), S/N 7358
- [N53061](https://openairdocs.org/aircraft/N53061): [Flying Ducks Aviation LLC](https://openairdocs.org/faa-owner/FLYING%20DUCKS%20AVIATION%20LLC), [Newport, OR](https://openairdocs.org/faa-place/OR/Newport), built 1978, S/N 177RG1334
- [N53JN](https://openairdocs.org/aircraft/N53JN): [La1074 LLC](https://openairdocs.org/faa-owner/LA1074%20LLC), [Naples, FL](https://openairdocs.org/faa-place/FL/Naples), built 1983, S/N 1074
- [N5551](https://openairdocs.org/aircraft/N5551): [Horton Daniel P](https://openairdocs.org/faa-owner/HORTON%20DANIEL%20P), [Wetumpka, AL](https://openairdocs.org/faa-place/AL/Wetumpka), built 2010, S/N 82605
- [N555AC](https://openairdocs.org/aircraft/N555AC): [Hawk Aviation LLC](https://openairdocs.org/faa-owner/HAWK%20AVIATION%20LLC), [Springville, NY](https://openairdocs.org/faa-place/NY/Springville), built 2011, S/N 531-2011
- [N728JB](https://openairdocs.org/aircraft/N728JB): [Bex Inc](https://openairdocs.org/faa-owner/BEX%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2014, S/N 560-2014

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB GAA18CA240](https://openairdocs.org/ntsb/GAA18CA240), Apr 24, 2018: Brown Joseph Sportsman GS-2 (N454HP), Kalispell, MT, substantial damage. Probable cause: The pilot’s selection of an unsuitable snow-covered airstrip for landing, which resulted in a nose-over.

## FAA accident and incident reports (7)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20221009016019I](https://openairdocs.org/incident/20221009016019I), Oct 9, 2022: Lake LA-4-200 (N53JN), Oshkosh, WI, Minor damage. On October 09, 2022 at approximately 1617 local time, a Lake LA-4-200 amphibious aircraft on a VFR flight landed at wittman regional airport Oshkosh, WI. The…
- [Accident 20180424004079A](https://openairdocs.org/incident/20180424004079A), Apr 24, 2018: Brown Joseph SPORTSMAN GS-2 (N454HP), Swan Lake, MT, Substantial damage. Airman attempted a landing at a back country strip made a few fly overs and observed tracks in the snow estimated it to be a few inches think. Airman touched…
- [Incident 19960702020429I](https://openairdocs.org/incident/19960702020429I), Jul 2, 1996: Gulstm 112A (N1443J), Atlanta, GA, Minor damage. Narrative: aircraft landed with nose gear up after several attempts to lower the gear. [privacy data omitted]
- [Incident 19950324008369I](https://openairdocs.org/incident/19950324008369I), Mar 24, 1995: Gulstm 112A (N1443J), Ashland, VA, Minor damage. Narrative: on 03-24-95, at 1645L, aircraft landed on runway 34 at the Hanover county airport. The aircraft landed mid-field with the landing gear fully…
- [Incident 19890923055859I](https://openairdocs.org/incident/19890923055859I), Sep 23, 1989: Cessna 177RG (N53061), New Smyrna Beac, FL. Fuel odor in cockpit. Engine quit. Forced landing on highway. Found broken standpipe in firewall fuel strainer.
- [Incident 19821201066479I](https://openairdocs.org/incident/19821201066479I), Dec 1, 1982: Cessna 177RG (N53061), Cullman, AL, Minor damage. Rough engine. Vectored to an airport. Engine quit on final. Landed gear up. Loose fuel line and intake pipes.
- [Incident 19811212085139I](https://openairdocs.org/incident/19811212085139I), Dec 12, 1981: Mooney M20J (N1142G), Rhinelander, WI, Minor damage. Struck tree tops on final for night landing. Landed on runway after impact. Landing light inoperative prior flight.

## Service difficulty reports (5)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2026FA0000903](https://openairdocs.org/sdr/2026FA0000903), Oct 7, 2026: PUSHROD. BENT. NR 2 EGT SLOW TO RISE, UPON RUN UP, FOUND DIFFICULT TO START, ENGINE RUNNING VERY ROUGH WITH POOR ACCELERATION. FOUND NR 2 PUSH ROD AND SHROUD BENT. REAMED ALL 
- [SDR 2026FA0000578](https://openairdocs.org/sdr/2026FA0000578), Apr 27, 2026: MAGNETO. FAILED. PILOT REPORTED NO START. MAINTENANCE CONFIRMED NO START. CHECKED POWER TO SLICK START, OKAY. CHECKED MAGNETO TO ENGINE TIMING, FOUND LEFT MAGNETO POINTS NOT OPE
- [SDR 2025FA0000650](https://openairdocs.org/sdr/2025FA0000650), Sep 17, 2025: JAM-NUT. UNDERTORQUED. FLAP ACTUATOR ROD END SEPARATED FROM ACTUATOR ASSEMBLY RESULTING IN LOSS OF FLAP OPERATION DURING FLIGHT. IT IS LIKELY THE JAMB NUT RETAINING THE ROD END WAS NO
- [SDR 2024FA0000943](https://openairdocs.org/sdr/2024FA0000943), Dec 6, 2024: EXHAUST VALVE. BROKEN. TURNING DOWNWIND FROM CROSSWIND THERE WAS A SINKING FEELING TO THE PLANE IN WHICH I TOOK OVER CONTROLS IMMEDIATELY CHECKED TO SEE IF POWER WAS FULL. THE POWER H
- [SDR 2018FA0000517](https://openairdocs.org/sdr/2018FA0000517), Sep 12, 2018: AIR BOX. CRACKED. MULTIPLE PORTIONS OF AIR FILTER HOUSING, PN 31026-002, CRACKED AND SEPARATED FROM REST OF HOUSING DOWN STREAM OF AIR FILTER. AREA OF DETERIORATION IS ON UPPER, 

## STCs that may be installed (OpenAirDocs) (5)

Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc
- [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp

## PMA parts (OpenAirDocs) (685, first 50)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first.

- [CFSTD-160](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170676910820240715164045.0001): Washer,  1/4 Lock, Internal Teeth. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-160 · Jun 24, 2024
- [CFLW-25-0.50](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156998595520240715164044.0001): Bolt,      1/4-20 X 0.50 HEX HD. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces LW-25-0.50 · Jun 24, 2024
- [CF75009](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147128829420240715164042.0001): Bracket, Fuel Manifold. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 75009 · Jun 24, 2024
- [CF07A23032](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132855100420240715164043.0001): Bracket, Fuel Manifold. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 07A23032 · Jun 24, 2024
- [CFSTD-251](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129676558220240715164045.0001): Washer, #10 Lock, Internal Teeth. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-251 · Jun 24, 2024
- [CFSTD-82](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123933662120240715164045.0001): Screw,   #10-24 X 1/2, RD HD. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-82 · Jun 24, 2024
- [ES3018](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194884707820251216184204.0001): Clamp, Bearing Cap. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3018 · May 20, 2024
- [AM-3021](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194256093820251216184144.0001): Screw Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3021 · May 20, 2024
- [ES3221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189601053820251216184228.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3221 · May 20, 2024
- [AK-3975](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181109606820251216184201.0001): Coil, Ignition. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3009, M3114, M3525, K3975, K3975 · May 20, 2024
- [AM-3015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180990573320251216184149.0001): Screw, Housing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3015 · May 20, 2024
- [AM-3006](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178460806720251216184151.0001): Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3006 · May 20, 2024
- [AM2536](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175576430320251216184152.0001): Woodruff Key. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2536 · May 20, 2024
- [ES3040](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175045989620251216184205.0001): Coil Wedge. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3040 · May 20, 2024
- [ES917](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170587168620251216184202.0001): Impulse Coupling Spring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M917 · May 20, 2024
- [AK-3984](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168254730520251216184200.0001): Capacitor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3183, K3984 · May 20, 2024
- [AM-2556](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164604517920251216184155.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2556 · May 20, 2024
- [ES3637K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163564757720251216184213.0001): Contact Point Secondary. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3637 · May 20, 2024
- [AM-3062](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155261831320251216184153.0001): Oil Seal. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3062 · May 20, 2024
- [ES3084](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152458666320251216184211.0001): Air Vent With Hood. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3084 · May 20, 2024
- [AM-3217](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152412216720251216184157.0001): Wave Spring Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M-3217 · May 20, 2024
- [AM-3485](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151878274520251216184156.0001): Bearing Cap, Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3485 · May 20, 2024
- [AM-3215](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151335825620251216184148.0001): Brush Assy, Distributor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3215 · May 20, 2024
- [ES3548](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID150971763920251216184224.0001): Machining, Rotating Magnet. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3548 · May 20, 2024
- [AM-3020](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134367835920251216184146.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3020 · May 20, 2024
- [ES3822](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID133744562220251216184220.0001): Dist. Block & Gear Assy.. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces K3822 · May 20, 2024
- [ES1077](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132381862220251216184212.0001): Air Vent. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M1077 · May 20, 2024
- [AM3611](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125128266220251216184158.0001): Cam. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3611, M1522 · May 20, 2024
- [ES3827](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113316784520251216184222.0001): Rotor Gear. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces K3827 · May 20, 2024
- [ES3826](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112237278720251216184206.0001): Spacer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3826 · May 20, 2024
- [ES3630](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108310017320251216184222.0001): Bearing Cap, Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3630, K3630 · May 20, 2024
- [ES3172](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103914286320251216184209.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3172 · May 20, 2024
- [A-13081K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103306043420251216184147.0001): Contact Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3081 · May 20, 2024
- [ES3019](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100047104220251216184208.0001): Nut. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3019 · May 20, 2024
- [ES4370](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID196983494720240301172623.0001): Magneto. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 4370 · Dec 1, 2023
- [KA14012](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193394967720240301172702.0001): Harness. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M4012 · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189210274620240301172642.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [ES12681](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143043735220240301172643.0001): Gasket. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW12681 · Dec 1, 2023
- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122172067820240301172627.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023
- [ES4345](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106747695420240301172623.0001): Magneto. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 4345 · Dec 1, 2023
- [TA2925-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193237775520231109132301.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 30, 2023
- [TA2925-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176004176820231109132302.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 30, 2023
- [KA14012](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136055414920230821125952.0001): Harness. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces M4012 · May 5, 2023
- [ES12681](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167811005920230502200155.0001): Gasket. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces LW12681 · Feb 9, 2023
- [ES1553](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112971925920230330124434.0001): Screw, Harness Cap. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces M1553 · Oct 27, 2022
- [PM2403](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197160420320220916164414.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 122-24HT,122-HT/ec,122-24LS,122-24PM,12… · May 16, 2022
- [PM1203](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180763837820220916164409.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 122-l2HT,122-12LS,122-t2PM,122-NL,31A22… · May 16, 2022
- [PM1201](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178083546420220916164407.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-12HT149-12LS,149-12PM,149-NL,31A221… · May 16, 2022
- [PM2401](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152894865720220916164412.0001): Starter Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 149-24HT,149-24HT/ec,149-24L5,149-24PM… · May 16, 2022
- [MC31C13P03](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID930813201320210723144523.0001): Stud. McFarlane Aviation Inc · PMA PQ3732CE · Replaces 31C13, 31C-13P03, 67528 · Jun 10, 2021

All of them: https://openairdocs.org/engine/lycoming-io-390-a1a6/pma.md

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