AD 72-14-03

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AD Number:
72-14-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model 744, 745D, and 810 Airplanes
Subject:
Failures Of Flap Chains
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Vickers-Armstrongs (Aircraft Limited)
Model:
Viscount 744 | Viscount 745D | Viscount 810
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Superseded AD: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Superseded By: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: 72-14-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1475

AD NUMBER:   72-14-03

SUBJECT HEADING:   Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model 744, 745D, and 810 Airplanes

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
72-14-03 BRITISH AIRCRAFT CORPORATION: Amdt. 39-1475. Applies to Viscount Model 744, 745D, and 810 airplanes.

Compliance is required as indicated.

To prevent possible in-flight failures of flap chains, accomplish the following:

(a) For models 744 and 745D series airplanes, within the next 25 landings after the effective date of this AD, unless already accomplished within the last 75 landings, inspect flap chains, P/N's 72403 sheets 171 through 185 and 431 through 439 odd numbers only, in accordance with paragraph (c).

(b) For model 810 series airplanes, within the next 25 landings after the effective date of this AD, unless already accomplished within the last 75 landings, inspect flap chains, P/N's 80203 sheets 85, 87, 91 through 97, and 703 through 709 odd numbers only, in accordance with paragraph (c).

(c) Visually inspect the flap chains for security of link pins and retention washers. Chain links that are adjacent to sliders and cannot be inspected from both sides must be visually inspected for possible displacement of link pins through loss of retention washers on the blind side.

(d) If any retention washers are found missing or loose or any link pins are found loose during the inspection required by paragraph (c), before further flight either -

(1) Replace the affected flap chain with a serviceable flap chain of the same part number; or

(2) Repair the affected flap chain by replacing the missing retention washers and securing the loose washers and link pins by peening the pin ends.

(e) For purposes of complying with this AD operators who have not kept a record of landings may either -

(1) Count each flight as one landing; or

(2) Subject to acceptance by an assigned FAA Maintenance Inspector, determine the number of landings by dividing each aircraft's hours' time in service by the operator's fleet average time for the aircraft type.

(f) If unserviceable flap chains are found during the inspection required by this AD, report the condition of the chains and the number of landings in service to the Chief, Aircraft Certification Staff, EU-100, Department of Transportation, Federal Aviation Administration, Europe, Africa, and Middle East Region, C/O American Embassy, APO New York 09667. Reporting approved by Bureau of the Budget under BOB No. 04-R0174.

This amendment is effective upon publication in the Federal Register as to all persons except those persons to whom it was made effective immediately by the telegram dated May 24, 1972, which contained this amendment.

FOOTER: