# Alliedsign TPE331-25D

- Type: Engine model (FAA registry)
- Registry code: 02528
- Manufacturer (registry): ALLIEDSIGN
- Model: TPE331-25D
- Engine type: Turbo-prop
- Power: 575 hp
- Data sheet: [TCDS E2WE](https://openairdocs.org/tcds/E2WE) (OpenAirDocs)
- Holder: Honeywell Aerospace US LLC
- Installed in: 0 registered aircraft
- Page: https://openairdocs.org/engine/alliedsign-tpe331-25d

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 2011-18-51 R1](https://openairdocs.org/ad/2011-18-51-R1): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more. Effective Oct 19, 2011
- [AD 95-16-08](https://openairdocs.org/ad/95-16-08): Life Limited Turbine Components · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 62 more. Effective Sep 5, 1995
- [AD 93-15-11](https://openairdocs.org/ad/93-15-11): Propeller Pitch Control (PPC) Gasket · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 58 more. Effective Sep 7, 1993
- [AD 84-10-06 R1](https://openairdocs.org/ad/84-10-06-R1): Fuel Pump Assemblies · Honeywell International TPE331-1, TPE331-10, TPE331-10B and 45 more. Effective Dec 26, 1984
- [AD 73-26-07 R3](https://openairdocs.org/ad/73-26-07-R3): Fuel Pump Shaft Internal Drive Splines · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 39 more. Effective Jul 31, 1980
- [AD 71-05-07](https://openairdocs.org/ad/71-05-07): High Speed Pinion Assembly · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 30 more. Effective Apr 8, 1972

Historical (superseded or no longer in force):

- [AD 2011-18-51](https://openairdocs.org/ad/2011-18-51) (historical): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more

## Information bulletins (advisory) (1)

- [SAIB NE-16-18](https://openairdocs.org/saib/NE-16-18): Power Lever  Loss of Power Control. Issued Jul 11, 2016

## Registered aircraft

None registered with this engine model now.

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports

None matched to aircraft with this engine model.

## Service difficulty reports (1)

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

- [SDR CA051013008](https://openairdocs.org/sdr/CA051013008), Oct 12, 2005: ENGINE. POWER LOSS. RT ENGINE WAS REMOVED FOR LOW TORQUE INDICATION AND SENT OUT FOR REPAIR AFTER TESTING PROVED AN INTERNAL PROBLEM. THE ENGINE WAS RE-INSTALLED FROM REPAIR WITH A

## STCs that may be installed (OpenAirDocs) (2)

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 SE7547SW](https://openairdocs.org/stc/SE7547SW): Install Garrett P/N 865558-16 or865558-1E propeller pitch control cam. Peacock Joe N
- [STC SE33WE](https://openairdocs.org/stc/SE33WE): Modification of: ( 1) Manual fuel valve and beta cams; (2) Fuel control linkage and propeller servo cam; and (3)Automatic control of bleed valve and engine starting functions; S/N P61801 only. Garrett Turbine Engine Company A Division of the Garrett Corporation

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