# AD 58-04-03: Rudder Trim Tab Adjustment Screw

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-23
- Published: March 13, 1958
- Issued: March 13, 1958
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 155 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D8303FF2129081E48625698B00765132.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/58-04-03

## The airworthiness directive

58-04-03 PIPER: Applies to Model PA-23 Aircraft, Serial Numbers 23-1 to 2-1253 Inclusive.

Compliance required at next 100-hour inspection but not later than April 1, 1958, whichever occurs first.

As a result of a number of failures, the hollow rudder trim tab adjustment screw, P/N 18453-00, must be replaced with a solid screw, P/N 18453-02.

(Piper Service Bulletin No. 162 covers this same subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A10](https://openairdocs.org/tcds/1A10): Piper Aircraft Inc.; names 1 of 6 models: PA-23

## 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: 155 (155 by airframe model, 0 by engine model)
- Makers: Piper 155

Models with the most aircraft:

- [Piper PA-23](https://openairdocs.org/model/piper-pa-23): 155 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/58-04-03/models.md
Every aircraft: https://openairdocs.org/ad/58-04-03/aircraft.md

Its text cites no advisory circulars or STCs.

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