# AD 44-52-01: Outer Wing Panel

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 247-D (Army C-73)
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E6F8CCB1F64D3B88625682A0063364E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/44-52-01

## The airworthiness directive

44-52-01 BOEING: (Was Service Note 1 of AD-558-1 and Service Note 1 of AD-524-1.) Applies to 247-D Aircraft. Inspect immediately and every 250 hours thereafter the outer wing panel 17SRT aluminum alloy spar chord members for cracks. Unless special openings are installed, the outer panels may have to be removed to permit thorough inspection. If cracks are found, the members should be repaired or replaced in a manner satisfactory to the FAA. If replacement 24ST tubing is installed no further inspection will be necessary. Boeing Service Bulletin No. 1 of D-6134 describes a satisfactory method of installation of inspection openings in the lower surface of the outer wing. Boeing Service Bulletin No. 2 of D-6134 covers replacement of 17SRT spar chords with 24ST spar chords.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS ATC 558](https://openairdocs.org/tcds/ATC%20558): The Boeing Company; names 1 of 1 models: 247-D (Army C-73)

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

Models with the most aircraft:

- [Boeing 247D](https://openairdocs.org/model/boeing-247d): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/44-52-01/models.md
Every aircraft: https://openairdocs.org/ad/44-52-01/aircraft.md

Its text cites no advisory circulars or STCs.

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