# AD 61-23-02: Elevator Tab Tension Rods

- Type: Airworthiness directive
- Status: Current
- Products: Bombardier CL-44D4
- Effective: November 3, 1961
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3A3A647A5A2ABC26862569A700587ADF.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/61-23-02

## The airworthiness directive

61-23-02 CANADAIR: Amdt. 362 Part 507 Federal Register November 3, 1961. Applies to all CL-44D4 aircraft.

Compliance required as indicated.

To preclude failure of the elevator tab tension rods, P/N 28-90031, the life of each rod is limited to 450 hours' time in service. Every 450 hours' time in service, all eight tension rods of the elevator tab system must be replaced with similar parts supplied by Canadair or FAA approved equivalent. For those aircraft with more than 450 hours' time in service on the effective date of this AD, rods must be replaced within the next 25 hours' time in service.

When the rods are replaced and detuned in accordance with the procedures in Canadair Service Bulletin No. CL44D4-201 Issue 2, the replacement time is increased to 10,000 hours' time in service.

(Canadair Service Bulletins Nos. CL44D4-190, and CL44D4-201 Issue 2 apply to this subject.)

This directive effective November 3, 1961.

Revised June 23, 1962.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A20](https://openairdocs.org/tcds/1A20): Bombardier Inc.; names 1 of 2 models: CL-44D4

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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