AD 64-01-03

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AD Number:
64-01-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; CANADAIR Model CL-44D4 Series Aircraft
Subject:
Lubrication Of Sealed Couplings
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/04/1964
Make:
Bombardier Inc.
Model:
CL-44D4
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 64-01-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   64-01-03

SUBJECT HEADING:   Airworthiness Directives; CANADAIR Model CL-44D4 Series Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective January 4, 1964.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
64-01-03 CANADAIR: Amdt. 667 Part 507 Federal Register January 4, 1964. Applies to all Model CL-44D4 Series aircraft.

Compliance required as indicated.

Due to several instances of seizure of sealed couplings in which loss of rudder control was experienced, accomplish the following on control system coupling P/N 44A53940 (14 per aircraft) excepting those which have been modified in accordance with Canadair Service Bulletin CL44D4-304 dated March 28, 1963, Revision B, dated July 11, 1963, or equivalent approved by Chief, Engineering and Manufacturing Branch, FAA Eastern Region:

(a) Within 25 hours' time in service after the effective date of this AD, unless already accomplished within the last 25 hours' time in service, and thereafter within 50 hours' time in service from the last inspection, perform the following:

(1) Visually inspect all sealed couplings P/N 44A53940 (14 per aircraft) in that portion extending into unpressurized areas for signs of brown staining between coupling housing and fork. If signs of brown staining are visible between coupling housing and fork, disconnect torque tubes at both ends of coupling and rotate fork to check for binding and seizure.

(2) Holding on to fork at unpressurized side of coupling, rotate and axially shift and cock rotating parts and check for freedom of movement. If there is no shaft movement, disconnect torque tubes at both ends of coupling and rotate fork to check for binding and seizure.

(3) If binding or seizure of a coupling is found, replace that coupling with the same part number or an equivalent approved by Chief, Engineering and Manufacturing Branch, FAA Eastern Region, before further flight.

(b) Within 25 hours' time in service after the effective date of this AD, unless already accomplished within the last 225 hours' time in service, and thereafter within 250 hours' time in service from the last inspection, lubricate all sealed couplings P/N 44A53940 (14 per aircraft) in accordance with the applicable air carrier's maintenance manual.

(c) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator.

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated December 13, 1963.

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