Service difficulty report · Duct · Boeing 747422

Difficulty date
March 15, 2010
Submitted
March 15, 2010
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
82,025 hours, 10,086 cycles
Engine
Pwa PW4056
Part
Duct
Part number
217U11171
Condition
Damaged
Location
Bs 480
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

EQ COOLING LOW FLOW SENSOR IN FWD PIT AT STA 480 RT OF CENTER LINE HAS DAMAGED DUCT AT NUT PLATE FASTENERS. REPAIRED DUCT AS REQUIRED. FILLED NUT PLATE HOLES WITH MILLED-FIBER & RESIN MIXTURE. BACKED REPAIR WITH .040 ALUMINUM AND INSTALLED .040 ALUMINUM ID PLATE OVER TOP OF CONNECTOR.