AD 73-20-01

73-20-01 FAIRCHILD: Amendment 39-1721 as amended by Amendment 39-2057. Applies to all Fairchild F-27 and FH-227 Type Aircraft Certificated in all categories.

Compliance required as indicated:

1. Affects front and rear horizontal stabilizer spar fittings, P/N's 27-213003-11, -12 and 27-213002-11 which have accumulated 2500 hours or more in service.

a. Within the next 30 days unless accomplished within the last 11 months, inspect stabilizer spar fittings in accordance with Section 2 of Fairchild Service Bulletins F-27-55-21 and FH-227-55-12, or inspect in accordance with an approved equivalent procedure.

b. The inspections specified in "a" above, shall be repeated at intervals not to exceed 12 calendar months or 2500 hours in service from the last inspection, whichever occurs first.

2. Corroded or cracked parts shall be replaced prior to further flight.

a. Parts replacement shall be in accordance with Section 2 of Fairchild Service Bulletins F-27-55-21 and FH-227-55-12, and shall be of the same part number or approved equivalent parts.

3. The aircraft may be flown in accordance with FAR 21.197 to a base where the inspections or repairs can be performed.

4. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, may adjust the inspection interval specified in this AD. Equivalent inspections or parts must be approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.

(Fairchild Service Bulletins F-27-55-21 and FH-227-55-12 pertain to this subject.)

Amendment 39-1721 was effective September 24, 1973. This amendment 39-2057 is effective December 31, 1974.