SDR DALA2016033102542

Service difficulty report · Firewall · Boeing 757232

Difficulty date: March 30, 2016
Submitted: April 4, 2016
Operation: Air carrier
Aircraft: N651DL
Make and model: Boeing 757232
Aircraft serial: 24391
Aircraft time: 87,022 hours, 37,143 cycles
System (JASC): 4910 · APU Cowling/Containment
Part: Firewall
Condition: Cracked
Location: Apu Bay
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

CRACK IN APU FIRE WALL UPPER FWD RT SIDE AT LEDGE CHORD BS 1896.2 VIA ACCESS 313AL, OTBD OF APU INLET DUCT. REMOVED DAMAGED SECTION OF FS 1896.2 APU UPPER FIREWALL SUPPORT ANGLE IAW ER/A 544124-14, REV O. FABRICATED REPAIR ANGLE FROM 6AL-4V .063" PO 651DL-00350, AND NEW SUPPORT ANGLE FROM 6AL-4V .050" PO 651DL-00349, IAW ER/A 544124-14, REV O. INSTALLED REPAIR PARTS IAW ER/A 544124-14, REV O ASSOCIATED ER/A 14-544124 ADDED FOR AC 0651.