Service difficulty report · Firewall · Boeing 747121

Difficulty date
April 18, 2002
Submitted
April 22, 2002
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
98,656 hours, 25,369 cycles
Part
Firewall
Condition
Cracked
Location
Nr 2 Pylon
Stage of operation
IN
How discovered
V
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

INSPECTION TYPE: NR 2 PYLON LOWER FIREWALL WEB O/B POSN CRACKED AT NAC 221.9 REAR ENGINE MOUNT BULKHEAD AREA. NR 2 PYLON LOWER FIREWALL WEB REPAIRED AS PER SRM 54-10-03 FIG 2.