# AD 59-11-03: Exhaust Heater Inspection

- Type: Airworthiness directive
- Status: Current
- Products: Mooney M20A
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 58 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D129434F836C062D86256A3A007171E8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/59-11-03

## The airworthiness directive

59-11-03 MOONEY: Applies to Mark 20A Aircraft Through Serial Number 1534. Compliance required as indicated. To guard against the possibility of carbon monoxide entering the cabin, the following inspection and/or repair is required: (1) Before next flight, visually inspect the exhaust pipes for cracking around the heater jacket bulkheads. Repair or replace as required. No welding is permitted inside the muff or at heater jacket bulkheads. (2) Within next 25 hours of flight and periodically every 50 hours thereafter, remove the heater muff jacket and inspect the complete exhaust system for cracking. Repair or redlace defective parts as required. The 50-hour inspection is not required if exhaust heater muff assembly P/N 6363 is installed. (Mooney Service Letter 20-38 concerns this subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2A3](https://openairdocs.org/tcds/2A3): Mooney International Corporation; names 1 of 17 models: M20A

## 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: 58 (58 by airframe model, 0 by engine model)
- Makers: Mooney 58

Models with the most aircraft:

- [Mooney M20A](https://openairdocs.org/model/mooney-m20a): 58 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/59-11-03/models.md
Every aircraft: https://openairdocs.org/ad/59-11-03/aircraft.md

Its text cites no advisory circulars or STCs.

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