# Allison T56-A-15 series

- Type: Engine model (FAA registry)
- Registry code: 03023
- Manufacturer (registry): ALLISON
- Model: T56-A-15 SER
- Engine type: Turbo-prop
- Power: 4,910 hp
- Installed in: 6 registered aircraft
- Page: https://openairdocs.org/engine/allison-t56-a-15-series

The registry names only the engine series, so ADs for every model in the series are matched.

## 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.

None matched.

## Registered aircraft (6)

- [N130CG](https://openairdocs.org/aircraft/N130CG): [Coulson Aviation USA Inc](https://openairdocs.org/faa-owner/COULSON%20AVIATION%20USA%20INC), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), built 1969, S/N 382-4339
- [N132CG](https://openairdocs.org/aircraft/N132CG): [Csc Delaware Trust Co Trustee](https://openairdocs.org/faa-owner/CSC%20DELAWARE%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1968, S/N 382-4338
- [N136CG](https://openairdocs.org/aircraft/N136CG): [Csc Delaware Trust Co Trustee](https://openairdocs.org/faa-owner/CSC%20DELAWARE%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1969, S/N 382-4334
- [N140CG](https://openairdocs.org/aircraft/N140CG): [Csc Delaware Trust Co Trustee](https://openairdocs.org/faa-owner/CSC%20DELAWARE%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1969, S/N 382-4337
- [N146CS](https://openairdocs.org/aircraft/N146CS): [United States Customs And Border Protection](https://openairdocs.org/faa-owner/UNITED%20STATES%20CUSTOMS%20AND%20BORDER%20PROTECTION), [Jacksonville, FL](https://openairdocs.org/faa-place/FL/Jacksonville), S/N 5286
- [N382CG](https://openairdocs.org/aircraft/N382CG): [Csc Delaware Trust Co Trustee](https://openairdocs.org/faa-owner/CSC%20DELAWARE%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1969, S/N 382-4336

## 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 GAA26WA062](https://openairdocs.org/ntsb/GAA26WA062), Dec 16, 2025: Lockheed Martin C-130H (N382CG), Katanning, Australia, incident, no damage

## FAA accident and incident reports

None matched to aircraft with this engine model.

## Service difficulty reports (9)

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

- [SDR 7CUR202603110001](https://openairdocs.org/sdr/7CUR202603110001), Mar 10, 2026: BLADE. CRACKED. PROPELLER S/N N225434A WAS SENT TO C&S PROPELLER FOR REPAIR FOLLOWING REPORTS THAT #1 BLADE TIP MOVEMENT EXCEEDED ALLOWABLE LIMITS. DURING DISASSEMBLY OF THE PR
- [SDR 7CUR20260126001](https://openairdocs.org/sdr/7CUR20260126001), Jan 26, 2026: BLADE. LEAKING. DURING MAINTENANCE, A LEAKING PROPELLER BLADE WAS FOUND. PROPELLER ASSEMBLY REMOVED AND REPLACED. DISASSEMBLY REVEALED OVERHEATING OF THRUST BEARINGS AND WASHER
- [SDR 7CUR07152026](https://openairdocs.org/sdr/7CUR07152026), Sep 12, 2025: FITTING. CRACKED. CENTER WING LOWER RAINBOW FITTING CRACKED ON RIGHT HAND SIDE AT WING STA 220.
- [SDR 2025FA0000289](https://openairdocs.org/sdr/2025FA0000289), Apr 22, 2025: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM
- [SDR 2025FA0000287](https://openairdocs.org/sdr/2025FA0000287), Dec 16, 2024: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM
- [SDR 2025FA0000290](https://openairdocs.org/sdr/2025FA0000290), Dec 16, 2024: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM
- [SDR 2025FA0000291](https://openairdocs.org/sdr/2025FA0000291), Dec 16, 2024: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM
- [SDR 2025FA0000292](https://openairdocs.org/sdr/2025FA0000292), Dec 16, 2024: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM
- [SDR 2025FA0000293](https://openairdocs.org/sdr/2025FA0000293), Dec 16, 2024: FUEL NOZZLE. OUT OF LIMITS. PILOT OBSERVED THE ENGINE TAKING LONGER THAN NORMAL TO START WITH START TEMPERATURES LOWER THAN USUAL, THOUGH STILL WITHIN ACCEPTABLE LIMITS. THE FLIGHT WAS COM

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