SDR DALA2016021801259

Service difficulty report · Threshold · Boeing 757232

Difficulty date: February 4, 2016
Submitted: February 19, 2016
Operation: Air carrier
Aircraft: N652DL
Make and model: Boeing 757232
Aircraft serial: 24392
Aircraft time: 87,049 hours, 36,361 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Threshold
Condition: Corroded
Location: L4 Door
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

L4 THRESHOLD LOWER SILL 2 EA. THRESHOLD SUPPORT CORRODED CP53-251-01L. REMOVED DAMAGED HAT CHANNELS AT LT 4 DOOR LOWER THRESHOLD IAW SRM 51-40-02. LOCATED AND DRILLED NEW HAT CHANNELS 2 EA, PN 146N8769U47. INSTALLED NUT PLATES, TREATED PRIMED HOLES AND INSTALLED CHANNELS IAW DWG NR 146N8722, REV N, AMM 51-20-01, SRM 51-40-02.