# AD 49-04-01: Aileron Chain

- Type: Airworthiness directive
- Status: Current
- Products: Textron 35, 35-33, 35-A33, 35-B33, 35-C33, 35-C33A and 35R
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 1,077 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/54CE4A8F4405637786256A0800733971.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/49-04-01

## The airworthiness directive

49-04-01 BEECH: Applies to Model 35 Serial Numbers D-1 to D-1300, Except D-69, D- 315, D-356, D-754, D-827, D-1117, D-1120, D-1201, D-1251, D-1274, D-1278, D-1285, D-1289, D-1290, D-1291, D-1293, D-1295, D-1296, D-1298 and D-1299.

To be accomplished at next 100-hour inspection but not later than May 1, 1949.

Remove aileron control wheel drive chain assembly from the control arm of the specified aircraft, which have not had the chain replaced by Beech facilities, and visually inspect the pin through each link for proper up-set heads on each end of the pin. Chains having end ferrules dyed green have been replaced by Beech facilities and need not be inspected.

(Beech Service Bulletin No. 35-8, revised January 3, 1949, covers this same subject.)

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A15](https://openairdocs.org/tcds/3A15): Textron Aviation Inc.; names 5 of 27 models: 35-C33A, 35-A33, 35-C33, 35-33, 35-B33
- [TCDS A-777](https://openairdocs.org/tcds/A-777): Textron Aviation Inc.; names 2 of 9 models: 35R, 35

## 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: 1,077 (1,077 by airframe model, 0 by engine model)
- Makers: Beech 1,077

Models with the most aircraft:

- [Beech 35-B33](https://openairdocs.org/model/beech-35-b33): 291 aircraft (airframe model)
- [Beech 35](https://openairdocs.org/model/beech-35): 266 aircraft (airframe model)
- [Beech 35-C33](https://openairdocs.org/model/beech-35-c33): 185 aircraft (airframe model)
- [Beech 35-33](https://openairdocs.org/model/beech-35-33): 130 aircraft (airframe model)
- [Beech 35-C33A](https://openairdocs.org/model/beech-35-c33a): 113 aircraft (airframe model)
- [Beech 35-A33](https://openairdocs.org/model/beech-35-a33): 85 aircraft (airframe model)
- [Beech 35R](https://openairdocs.org/model/beech-35r): 7 aircraft (airframe model)

All 7 models: https://openairdocs.org/ad/49-04-01/models.md
Every aircraft: https://openairdocs.org/ad/49-04-01/aircraft.md

Its text cites no advisory circulars or STCs.

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