# AD 80-13-06: Air Door Catch Assembly Attachment

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-31-325 and PA-31-350
- Effective: June 23, 1980
- Published: June 23, 1980
- Issued: June 6, 1980
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-3803
- Registered aircraft: 536 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/80DE47B5F1D59F45862569A6005CCAC2.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/80-13-06

## The airworthiness directive

80-13-06 PIPER AIRCRAFT CORPORATION: Amendment 39-3803. Applies to Model PA-31-325, serial numbers 31-7400990, 31-7512006 through 31-7612030; and Model PA-31-350, serial numbers 31-5001 through 31-7652066 airplanes certificated in all categories.

Compliance required within the next 50 hours' time in service after the effective date of this Airworthiness Directive unless already accomplished.

To prevent possible failure of the alternate air door magnetic catch assembly attachment and ingestion of the magnetic catch into the turbocharger accomplish the following:

Modify or replace the magnetic catch assembly in accordance with Piper Aircraft Service Bulletin No. 479B, dated March 23, 1976, or an equivalent method approved by Chief, Engineering and Manufacturing Branch, FAA, Southern Region.

This amendment becomes effective June 23, 1980.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A20SO](https://openairdocs.org/tcds/A20SO): Piper Aircraft Inc.; names 2 of 4 models: PA-31-325, PA-31-350

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 536 (536 by airframe model, 0 by engine model)
- Makers: Piper 536

Models with the most aircraft:

- [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350): 399 aircraft (airframe model)
- [Piper PA-31-325](https://openairdocs.org/model/piper-pa-31-325): 137 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/80-13-06/models.md
Every aircraft: https://openairdocs.org/ad/80-13-06/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.