# AD 50-42-01: Elevator Tab Replacement

- Type: Airworthiness directive
- Status: Current
- Products: Textron A35
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 159 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DBA09B07C8F1344986256A08006E6647.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/50-42-01

## The airworthiness directive

50-42-01 BEECH: Applies to Model A35 Aircraft, Serial Numbers D-1501 to D-2200 Inclusive Not Having the Cambered Elevator Tabs Installed.

Compliance required at next 100 hours inspection but not later than November 15, 1950.

All aircraft should be modified as follows:

  (1) Replace the elevator tabs (noncambered) with cambered tabs (lower surface cambered) P/N 35-660040-52 and -53 or,

  (2) Restrict rear c.g. limit by appropriate revisions to loading schedules and Airplane Flight Manual to comply with the following c.g. limits:

(plus 83.7) to (plus 84.4) at 2,650 pounds

(plus 75.9) to (plus 84.4) at 2,140 pounds or less

Straight line variation between forward c.g. limits.

(Beech Service Bulletin No. A35-8 dated April 3, 1950, covers this same subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-777](https://openairdocs.org/tcds/A-777): Textron Aviation Inc.; names 1 of 9 models: A35

## 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: 159 (159 by airframe model, 0 by engine model)
- Makers: Beech 159

Models with the most aircraft:

- [Beech A35](https://openairdocs.org/model/beech-a35): 159 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/50-42-01/models.md
Every aircraft: https://openairdocs.org/ad/50-42-01/aircraft.md

Its text cites no advisory circulars or STCs.

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