# AD 61-11-05: Wing Structure Corrosion

- Type: Airworthiness directive
- Status: Current
- Products: P. V. Shields A-26B (Army) and A-26C (Army)
- Effective: June 29, 1961
- Published: May 30, 1961
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 19 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4606A9FDA9B09993862569BC0073F956.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/61-11-05

## The airworthiness directive

61-11-05 DOUGLAS: Amdt. 291 Part 507 Federal Register May 30, 1961. Applies to All Models A-26 (B-26) Series Aircraft.

Compliance required as indicated.

As a result of several reported cases of severe corrosion of the wing structure in the area beneath the wing fuel tanks, the following must be accomplished at the next periodic inspection and every periodic inspection thereafter, until (b) is accomplished:

  (a) Remove the center wing fuel tanks and inspect the internal wing structure for corrosion. If corrosion is found, FAA approved repairs and/or replacement of affected parts must be made prior to further flight. Also, inspect the sponge rubber mats under the fuel cells, and if found deteriorated they must be replaced prior to next flight.

  (b) When the sponge rubber mats have been replaced with closed cell neoprene sponge mats, or equivalent, and any corrosion damage present is repaired, the special inspection of (a) is no longer required.

This directive effective June 29, 1961.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3): P. V. Shields; names 2 of 2 models: A-26B (Army), A-26C (Army)

## 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: 19 (19 by airframe model, 0 by engine model)
- Makers: Douglas 19

Models with the most aircraft:

- [Douglas A-26B](https://openairdocs.org/model/douglas-a-26b): 11 aircraft (airframe model)
- [Douglas A-26C](https://openairdocs.org/model/douglas-a-26c): 8 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/61-11-05/models.md
Every aircraft: https://openairdocs.org/ad/61-11-05/aircraft.md

Its text cites no advisory circulars or STCs.

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