# AD 51-16-01: Trim Tab Modification

- Type: Airworthiness directive
- Status: Current
- Products: Bellanca 14-13 and 14-13-2
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 120 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3237B5DDF1D946386256A340056F2FA.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/51-16-01

## The airworthiness directive

51-16-01 BELLANCA: Applies to All Models 14-13 and 14-13-2 Airplanes.

Compliance required within the next 25 hours of operation, but not later than August 1, 1951.

As a result of a recent failure of the elevator trim tab in flight, the modification of the trim tab attachment to the elevator as shown in Figure 1 should be made.

FIGURE 1

(Bellanca Service Bulletin No. 14, Models 14-13 and 14-13-2, covers this same subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-773](https://openairdocs.org/tcds/A-773): Bellanca Aircraft Corporation; names 2 of 4 models: 14-13-2, 14-13

## 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: 120 (120 by airframe model, 0 by engine model)
- Makers: Bellanca 120

Models with the most aircraft:

- [Bellanca 14-13-2](https://openairdocs.org/model/bellanca-14-13-2): 77 aircraft (airframe model)
- [Bellanca 14-13](https://openairdocs.org/model/bellanca-14-13): 43 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/51-16-01/models.md
Every aircraft: https://openairdocs.org/ad/51-16-01/aircraft.md

Its text cites no advisory circulars or STCs.

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