SDR AU990486

Service difficulty report · Bulkhead · Boeing 737377

Difficulty date: April 19, 1999
Submitted: March 26, 2000
Operation: General aviation
Make and model: Boeing 737377
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Bulkhead
Condition: Cracked
Location: Bs 178
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

(AUS) FORWARD PRESSURE BULKHEAD LOCATED AT STA 178 CRACKED IN THE FOLLOWING LOCATIONS: 1. CRACK LOCATED ON THE INBOARD SIDE RADIUS OF THE LT VERTICAL CHORD (LBL 5.7) AND WL184 ON THE AFT SIDE OF THE BULKHEAD - CRACK LENGTH 9.525 MM (0.375 INCH). 2. CRACK LOCATED IN THE RT SIDE CHORD RADIUS AT WL 207 ABOVE AND BELOW FLOOR LEVEL - CRACK LENGTH 31.75 MM (1.25 INCH) FOUND DURING EDDY CURRENT INSPECTION IAW ER B73-53-10-39D.