# Pratt & Whitney JT12A-6

- Type: Engine model (FAA registry)
- Registry code: 51703
- Manufacturer (registry): P & W
- Model: JT12A-6
- Engine type: Turbo-jet
- Power: 3,000 lb thrust
- Data sheet: [TCDS 1E9](https://openairdocs.org/tcds/1E9) (OpenAirDocs)
- Holder: Erickson Incorporated DBA Erickson Air-Crane
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-jt12a-6

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 71-24-05](https://openairdocs.org/ad/71-24-05): Compressor Rotor Discs · Pratt & Whitney Division JFTD12A-4A (T73P-1), JFTD12A-5A (T73-P-700), JT12A-6 and 2 more. Effective May 31, 1974
- [AD 71-17-06](https://openairdocs.org/ad/71-17-06): Stage 2, 3, 7 and 8 Compressor Rotor Discs · Pratt & Whitney Division J60-P-5B, JT12A-6, JT12A-6A and 1 more. Effective Aug 17, 1971
- [AD 56-06-02](https://openairdocs.org/ad/56-06-02): Cylinder Flange Attaching Stud · Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18 and 115 more

## Registered aircraft (2)

- [N129MM](https://openairdocs.org/aircraft/N129MM): [Hga LLC](https://openairdocs.org/faa-owner/HGA%20LLC), [Henderson, NV](https://openairdocs.org/faa-place/NV/Henderson), built 1968, S/N 892790
- [N7149X](https://openairdocs.org/aircraft/N7149X): [Viper Partners LLC](https://openairdocs.org/faa-owner/VIPER%20PARTNERS%20LLC), [New York, NY](https://openairdocs.org/faa-place/NY/New%20York), built 1965, S/N 591322

## 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 WPR22FA350](https://openairdocs.org/ntsb/WPR22FA350), Sep 18, 2022: Aerovodochody L-29 Delfin (N129MM), Reno, NV, destroyed, 1 fatal. Probable cause: The pilot’s in-flight incapacitation due to G-induced loss of consciousness, which resulted in a subsequent impact with terrain.

## FAA accident and incident reports (1)

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.

- [Accident 20220918023369A](https://openairdocs.org/incident/20220918023369A), Sep 18, 2022: Aerovodochody L-29 DELFIN (N129MM), Stead, NV, Destroyed, 1 fatal. During rara ncar 2022, [privacy data omitted] turned left at pylon 4 heading toward pylon 5 and turned too FAR left and appeared to witnesses that [privacy…

## Service difficulty reports (1)

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

- [SDR 2010FA0000628](https://openairdocs.org/sdr/2010FA0000628), Jun 15, 2010: SKIN. CORRODED. ((KI2R)) IN THE PROCESS OF ACCOMPLISHING A PRE-FLIGHT INSPECTION, THE TECH FOUND CRACKING AS THE RESULT OF INNER-GRANULAR CORROSION ON THE DOOR IN THE AREA OTBD

## PMA parts (OpenAirDocs) (195, 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.

- [80888TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID196237341020260616140917.0001): Gear, Driver – Control. Source Manufacturing Inc · PMA PQ1549CE · Replaces 80888 · Apr 10, 2026
- [745112TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194317500420260616140917.0001): Rivet–Split, Fillister. Source Manufacturing Inc · PMA PQ1549CE · Replaces 745112 · Apr 10, 2026
- [71080TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189780568720260616140915.0001): Washer, Key. Source Manufacturing Inc · PMA PQ1549CE · Replaces 71080 · Apr 10, 2026
- [370915TMT, 370915-05TMT, 370915-10TMT, 370915-15TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182531854620260616140912.0001): Spacer, Sleeve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 370915 · Apr 10, 2026
- [406123TMT, 406123-05TMT, 406123-10TMT, 406123-15TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180036331320260616140913.0001): Spacer, Sleeve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 406123 · Apr 10, 2026
- [491975TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179798830320260616140915.0001): Washer. Source Manufacturing Inc · PMA PQ1549CE · Replaces 491975 · Apr 10, 2026
- [446-3-90TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178360562220260616140916.0001): Screw, Machine – Flathead. Source Manufacturing Inc · PMA PQ1549CE · Replaces 446-3-90 · Apr 10, 2026
- [406119TMT, 406119-05TMT, 406119-10TMT, 406119-15TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175682255220260616140912.0001): Spacer, Sleeve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 406119 · Apr 10, 2026
- [80890TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167266528020260616140917.0001): Shaft, Control Drive Gear. Source Manufacturing Inc · PMA PQ1549CE · Replaces 80890 · Apr 10, 2026
- [390940TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID166143657520260616140915.0001): Gearshaft, Main Oil Pump. Source Manufacturing Inc · PMA PQ1549CE · Replaces 390940 · Apr 10, 2026
- [586986TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157738458620260616140910.0001): Valve, Fuel Dump. Source Manufacturing Inc · PMA PQ1549CE · Replaces 586986 · Apr 10, 2026
- [388505TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155399131420260616140914.0001): Adjuster Housing. Source Manufacturing Inc · PMA PQ1549CE · Replaces 388505 · Apr 10, 2026
- [373221TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155001386020260616140910.0001): Plug, Guide. Source Manufacturing Inc · PMA PQ1549CE · Replaces 373221 · Apr 10, 2026
- [370779TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153540178020260616140911.0001): Washer, Key. Source Manufacturing Inc · PMA PQ1549CE · Replaces 370779 · Apr 10, 2026
- [586987TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153079269020260616140911.0001): Strip, Extension – Fuel Dump Valve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 586987 · Apr 10, 2026
- [695847TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148803224420260616140914.0001): Stator, Fuel Nozzle. Source Manufacturing Inc · PMA PQ1549CE · Replaces 695847 · Apr 10, 2026
- [397229TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143631943920260616140911.0001): Spring, Helical Compression. Source Manufacturing Inc · PMA PQ1549CE · Replaces 397229 · Apr 10, 2026
- [384240TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140794862620260616140909.0001): Liner. Source Manufacturing Inc · PMA PQ1549CE · Replaces 384240 · Apr 10, 2026
- [80904TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126014310520260616140916.0001): Washer, Thrust. Source Manufacturing Inc · PMA PQ1549CE · Replaces 80904 · Apr 10, 2026
- [370917TMT, 370917-05TMT, 370917-10TMT, 370917-15TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125200865820260616140912.0001): Spacer, Sleeve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 370917 · Apr 10, 2026
- [545073TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120704003420260616140914.0001): Adjuster. Source Manufacturing Inc · PMA PQ1549CE · Replaces 545073 · Apr 10, 2026
- [71078TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119886479520260616140913.0001): Impeller Assembly, Shaft and Pin. Source Manufacturing Inc · PMA PQ1549CE · Replaces 71078 · Apr 10, 2026
- [407395TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117839264120260616140915.0001): Washer, Key. Source Manufacturing Inc · PMA PQ1549CE · Replaces 407395 · Apr 10, 2026
- [49902TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID107187630520260616140915.0001): Gear, Impeller Driven. Source Manufacturing Inc · PMA PQ1549CE · Replaces 49902 · Apr 10, 2026
- [384249TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106832901220260616140910.0001): Valve Assembly. Source Manufacturing Inc · PMA PQ1549CE · Replaces 384249 · Apr 10, 2026
- [414471TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106828924920260616140916.0001): Pin. Source Manufacturing Inc · PMA PQ1549CE · Replaces 414471 · Apr 10, 2026
- [586989TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104968989020260616140911.0001): Spring, Garter – Fuel Dump Valve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 586989 · Apr 10, 2026
- [394809TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104597897620260616140914.0001): Spacer Seal. Source Manufacturing Inc · PMA PQ1549CE · Replaces 394809 · Apr 10, 2026
- [370916TMT, 370916-05TMT, 370916-10TMT, 370916-15TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100260108120260616140912.0001): Spacer, Sleeve. Source Manufacturing Inc · PMA PQ1549CE · Replaces 370916 · Apr 10, 2026
- [80884TMT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100162069420260616140916.0001): Shaft, Main Drive. Source Manufacturing Inc · PMA PQ1549CE · Replaces 80884 · Apr 10, 2026
- [3036376GF](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187641607320230829140955.0001): Filter Element. Global Filtration, Inc. · PMA PQ0993SW · Replaces Pratt and Whitney Canada Corp… · May 19, 2023
- [370077AA](https://drs.faa.gov/browse/excelExternalWindow/A3BF0CF5444E6F11862580CE00749445.0001): Bearing. Able Aerospace Services, Inc. · PMA PQ2487NM · Replaces 370077 · Feb 1, 2017
- [668725AA](https://drs.faa.gov/browse/excelExternalWindow/A3B359745C596D3D862580CE007494A1.0001): Seal. Able Aerospace Services, Inc. · PMA PQ2487NM · Replaces 668725 · Feb 1, 2017
- [547559AA](https://drs.faa.gov/browse/excelExternalWindow/9BE81050B0084DE7862580CE007494A0.0001): Bumper. Able Aerospace Services, Inc. · PMA PQ2487NM · Replaces 547559 · Feb 1, 2017
- [547559AA](https://drs.faa.gov/browse/excelExternalWindow/84293E5DDAC7669D86257FAE006ADFC2.0001): Bumper. Able Engineering and Component Services, Inc. · PMA PQ2487NM · Replaces 547559 · Feb 1, 2017
- [370077AA](https://drs.faa.gov/browse/excelExternalWindow/72540DB1300F83EC86257FAE006ADF8B.0001): Bearing. Able Engineering and Component Services, Inc. · PMA PQ2487NM · Replaces 370077 · Feb 1, 2017
- [668725AA](https://drs.faa.gov/browse/excelExternalWindow/435A2A0EBAD9F36D86257FAE006ADFC4.0001): Seal. Able Engineering and Component Services, Inc. · PMA PQ2487NM · Replaces 668725 · Feb 1, 2017
- [80890TMT](https://drs.faa.gov/browse/excelExternalWindow/9ED2464D45F0AD5A862579A0005E5B5F.0001): Shaft, Control Drive Gear. TMT Research Development Inc · PMA PQ3975CE · Replaces 80890 · Dec 26, 2011
- [80888TMT](https://drs.faa.gov/browse/excelExternalWindow/B6B2EFD625A5D1218625799F006D1E2F.0001): Gear, Driver-Control. TMT Research Development Inc · PMA PQ3975CE · Replaces 80888 · Nov 8, 2011
- [745112TMT](https://drs.faa.gov/browse/excelExternalWindow/9FF112045998D6F88625799F006D1DF4.0001): Rivet-Split, Fillister. TMT Research Development Inc · PMA PQ3975CE · Replaces 745112 · Nov 8, 2011
- [745112TMT](https://drs.faa.gov/browse/excelExternalWindow/FDE18028E8763CBE8625799F006D1E66.0001): Rivet-Split, Fillister. TMT Research Development Inc · PMA PQ3975CE · Replaces 745112 · Oct 5, 2011
- [80888TMT](https://drs.faa.gov/browse/excelExternalWindow/DA01DF997287987B8625799F006D1E98.0001): Gear, Driver-Control. TMT Research Development Inc · PMA PQ3975CE · Replaces 80888 · Oct 5, 2011
- [80884TMT](https://drs.faa.gov/browse/excelExternalWindow/F46F23518AC6D39B86257910006413D0.0001): Shaft, Main Drive. TMT Research Development Inc · PMA PQ3975CE · Replaces 80884 · Jul 18, 2011
- [732056-7WD](https://drs.faa.gov/browse/excelExternalWindow/35A76672D4E811F6862578A9004EA388.0001): Roller, Hollow. Wencor LLC (formerly Dixie Aerospace LLC) · PMA PQ1630CE · Replaces Hamilton Sundstrand 732056-7 · Apr 13, 2011
- [80904TMT](https://drs.faa.gov/browse/excelExternalWindow/E150B228285F0344862577A400569753.0001): Washer, Thrust. TMT Research Development Inc · PMA PQ3975CE · Replaces 80904 · Jun 2, 2010
- [414471TMT](https://drs.faa.gov/browse/excelExternalWindow/BC68850E7C51B9E986257736006F365D.0001): Pin. TMT Research Development Inc · PMA PQ3975CE · Replaces 414471 · Mar 10, 2010
- [446-3-90TMT](https://drs.faa.gov/browse/excelExternalWindow/6B37474A72A7FB1D86257736006F3688.0001): Screw - Machine - Flathead. TMT Research Development Inc · PMA PQ3975CE · Replaces 446-3-90 · Mar 10, 2010
- [390940TMT](https://drs.faa.gov/browse/excelExternalWindow/7741F9D353CC1F4A86257632006B606A.0001): Gearshaft, Main Oil Pump. TMT Research Development Inc · PMA PQ3975CE · Replaces 390940 · Jun 8, 2009
- [71080TMT](https://drs.faa.gov/browse/excelExternalWindow/D07ADDDC55587B22862575C4006725A6.0001): Washer, Key. TMT Research Development Inc · PMA PQ3975CE · Replaces Chandler Evans 71080 · Mar 9, 2009
- [388505TMT](https://drs.faa.gov/browse/excelExternalWindow/CF3473818F5EEA06862574A6005C2149.0001): Housing. TMT Research Development Inc · PMA PQ3975CE · Replaces Pratt & Whitney 388505 · Oct 13, 2007

All of them: https://openairdocs.org/engine/pratt-whitney-jt12a-6/pma.md

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