# AD 77-09-06: Lower Rudder Bearing

- Type: Airworthiness directive
- Status: Current
- Products: Bombardier CL-215-1A10
- Effective: May 9, 1977
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-2887
- Registered aircraft: 2 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5BB19B3E7F0B76DA862569A7005FA344.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/77-09-06

## The airworthiness directive

77-09-06 CANADAIR: Amendment 39-2887. Applies to Canadair CL-215-1A10 Airplanes, Serial Numbers 1001 to 1043 inclusive and 1046, not altered in accordance with Appendix I of Canadair Information Circular 110-CL-215 dated October 27, 1975 or an FAA approved equivalent.

Compliance is required as indicated.

To prevent failure of the lower rudder bearing due to water ingress and subsequent corrosion, accomplish the following:

  (a) Prior to 1200 hours in service, and at each 1050 hours in service or one year, whichever occurs first thereafter, inspect for corrosion as outlined in paragraphs "Inspection" and "Rework" in Canadair Information Circular 110-CL-215 dated October 27, 1975 or later approved revision thereto, or an FAA approved equivalent.

  (b) Equivalent alterations and inspections must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

  (c) Upon request, with substantiating data submitted through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, may adjust the compliance times specified in this AD.

This amendment becomes effective May 9, 1977.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A14EA](https://openairdocs.org/tcds/A14EA): De Havilland Aircraft of Canada Limited; names 1 of 3 models: CL-215-1A10

## 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: 2 (2 by airframe model, 0 by engine model)
- Makers: Canadair 2

Models with the most aircraft:

- [Canadair CL215 1A10](https://openairdocs.org/model/canadair-cl215-1a10): 2 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/77-09-06/models.md
Every aircraft: https://openairdocs.org/ad/77-09-06/aircraft.md

Its text cites no advisory circulars or STCs.

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