SDR DALA2015021201208

Service difficulty report · Crease Beam · Boeing 757351

Difficulty date: February 11, 2015
Submitted: February 12, 2015
Operation: Air carrier
Aircraft: N594NW
Make and model: Boeing 757351
Aircraft serial: 32994
Aircraft time: 41,658 hours, 13,881 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Crease Beam
Condition: Corroded
Location: Bs 734
Stage of operation: IN
How discovered: 9
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

CORROSION ON RT CREASE BEAM INNER ANGLE, BS 734. REMOVED CORROSION IAW SRM 53-30-15 ALLOWABLE DAMAGE, 1 PG 101-107, DETAIL III, IV AND VI ORIGINAL MATERIAL .080" NDT IAW PT 6, 51-00-9-16. NO CRACKS NOTED UT THICKNESS IAW NDTM 4, 51-00-10. FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15 ALLOWABLE DAMAGE 1, DETAIL IV. R & R CREASE BEAM BETWEEN BS 660-750 IAW SRM 51-40-02 AND SRM 51-40-05, PG 6, PAR 7D PERMANENT REPAIR ACCOMPLISHED.