SDR DALA13002565652

Service difficulty report · Support Channel · Boeing 757251

Difficulty date: January 17, 2013
Submitted: January 18, 2013
Operation: Air carrier
Aircraft: N552NW
Make and model: Boeing 757251
Aircraft serial: 26499
Aircraft time: 31,101 hours, 12,953 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support Channel
Condition: Corroded
Location: Bs 344-373
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 UPPER LEG'S OF SUPPORT CHANNELS, FIVE AT L1 DOOR LOWER SILL, BS 344 TO 373. BLEND CORROSION ON 2 EA SUPPORT CHANNELS IAW SRM 53-10-15, FIG 101 WITHIN LIMITS IAW SRM 53-10-15, FIG 101, DETAIL VI. R & R 3 EA FABRICATED SUPPORT CHANNELS IAW SRM 51-40-02, PG 7, COMPLETED.