# AD 46-33-02: Fuselage Bulkhead Flange Stiffener

- Type: Airworthiness directive
- Status: Current
- Products: Swift Museum Foundation GC-1A and GC-1B
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 541 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/485CEDEE57AAB50986256A56006AD787.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/46-33-02

## The airworthiness directive

46-33-02 GLOBE: (Was Mandatory Note 2 of AD-766-5.) Applies to Models GC-1A, GC-1B Aircraft Serial Numbers 3 to 174 Inclusive.

Compliance required prior to October 1, 1946.

Install stiffeners, Globe P/N 11-213-1471-1 R & L, on the flange of the upper bulkhead at fuselage Station 167, with six rivets per stiffener, to prevent the formation of cracks originating at the joggles in the flange outboard of the stabilizer attachment points. Any crack should be stop drilled. If it extends into the web of the bulkhead an 0.040-inch 24ST alclad reinforcing plate extending to the flange should be installed on the web with rivets spaced not more than 3/4 inches apart.

(Globe Customer Service Maintenance Bulletin No. 2 covers this same subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-766](https://openairdocs.org/tcds/A-766): Swift Museum Foundation Inc.; names 2 of 2 models: GC-1A, GC-1B

## 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: 541 (541 by airframe model, 0 by engine model)
- Makers: Globe 426, Temco 115

Models with the most aircraft:

- [Globe GC-1B](https://openairdocs.org/model/globe-gc-1b): 395 aircraft (airframe model)
- [Temco GC-1B](https://openairdocs.org/model/temco-gc-1b): 115 aircraft (airframe model)
- [Globe GC-1A](https://openairdocs.org/model/globe-gc-1a): 31 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/46-33-02/models.md
Every aircraft: https://openairdocs.org/ad/46-33-02/aircraft.md

Its text cites no advisory circulars or STCs.

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