SDR 95ZZZX7068

Service difficulty report · Rib · Boeing 72723

Difficulty date: November 28, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N1972
Make and model: Boeing 72723
Aircraft serial: 18428
System (JASC): 5712 · Wing, Rib/Bulkhead
Part: Rib
Condition: Cracked
Location: Lt Ws 601.5
Stage of operation: IN
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING INSPECTION OF AIRCRAFT PER AD 94-07-08 (SB 727-57-127), THE HYDROPRESSED WING RIB AT LT WS 601.5 WAS FOUND CRACKED IN 4 PLACES. THE UPPER FLANGE WAS CRACKED AT THE 2ND FASTENER HOLE FORWARD OF THE AFT END. THE LOWER FLANGE WAS CRACKED AT THE 3RD, 4TH, AND 5TH FASTENER HOLES AFT OF THE FORWARD END. SUSPECT CAUSE: FATIGUE.

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