# AD 83-22-03: Bulkhead Modifications

- Type: Airworthiness directive
- Status: Current
- Products: Bombardier CL-600-1A11 (CL-600)
- Effective: November 7, 1983
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-4756
- Registered aircraft: 7 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/06B0DF458A3F5283862569EA006BDFB0.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-22-03

## The airworthiness directive

83-22-03 CANADAIR: Amendment 39-4756. Applies to Canadair Model CL-600-1A11 airplanes, serial numbers 1005 through 1008 and 1010 through 1056, certificated in all categories. Compliance required as indicated, unless already accomplished.

A. To ensure the structural integrity of the bulkhead at F.S. 409.00, incorporate modifications in accordance with Canadair Service Bulletin 600-0124, dated March 23, 1982, within the next 25 hours time in service after the effective date of this AD or upon accumulation of 1175 total flying hours, whichever is later.

B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

This amendment becomes effective November 7, 1983.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A21EA](https://openairdocs.org/tcds/A21EA): Bombardier Inc.; names 1 of 5 models: CL-600-1A11 (600)

## 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: 7 (7 by airframe model, 0 by engine model)
- Makers: Canadair 7

Models with the most aircraft:

- [Canadair CL-600-1A11](https://openairdocs.org/model/canadair-cl-600-1a11): 5 aircraft (airframe model)
- [Canadair CL600-1A11](https://openairdocs.org/model/canadair-cl600-1a11): 2 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/83-22-03/models.md
Every aircraft: https://openairdocs.org/ad/83-22-03/aircraft.md

Its text cites no advisory circulars or STCs.

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