AD 82-02-01

82-02-01 PIPER: Amendment 39-4298. Applies to Model PA-38-112, Serial Nos. 38-78A0001 thru 38-81A0051 and 38-81A0105 certificated in all categories except aircraft incorporating Aileron Balance Weight Rib Reinforcement Kit, Piper Part No. 764140.

To prevent possible hazards in flight associated with cracks in the Aileron Balance Weight Rib P/N's 77342-16 and -17 accomplish the following within the next 100 hours in service unless already accomplished, and thereafter at intervals not to exceed 100 hours in service from the last inspection.

a. Remove the aircraft wing tips and aileron balance weights.

b. Using a minimum 10 power magnifier, inspect the aileron balance weight rib flange area for cracks.

c. If no cracks are found, reinstall the balance weights and wing tips.

d. If cracks are found, replace the cracked ribs with undamaged ribs of the same part numbers and incorporate Aileron Balance Weight Rib Reinforcement Kit Piper Part No. 764140.

e. Upon the incorporation of Aileron Balance Weight Rib Reinforcement Kit, Piper Part No. 764140, the repetitive inspection required by this AD may be discontinued.

f. Alternate inspections, repairs or alterations which provide an equivalent level of safety may be used when approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

g. 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 intervals specified in this AD.

(Piper Service Bulletin No. 723 dated August 19, 1981, refers to this subject.)

This amendment is effective January 11, 1982.