Service difficulty report · Duct · Boeing 727228

Difficulty date
April 17, 2001
Submitted
April 19, 2001
Operation
Air carrier
Aircraft
N727DH
Make and model
Boeing 727228
Aircraft serial
20204
Engine
Pwa JT8*
Part
Duct
Part number
6522444803
Condition
Bent
Location
8th Stage
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

ON CLIMB-OUT LT DUCT PRESS 46PSI RT 64PSI WITH ENG NR 1 EPR 1.88 AND NR 3 AT 1.84 WITH ENG ANTI-ICE ON. AFTER ENG NR 3 STRUT OHEAT PROB WAS STABILIZED. SEE 2P BELOW WITH ENG NR 3 BLEED-OFF AND NR 2 BLEED-0N DUCT PRESSURES WERE MATCHED AT 32 PSI WITH ENG NR 1 AT 1.76 EPR AND NR 2 AT 1.78 EPR. PERFORMED HI PRESS BLEED CONTROL (SYS OPS CHECK AND FOUND NO DEFECTS AS PER MM 36-12-01 SEC 2 TEST & JRH 6.5. REPAIRED FLANGE ON NR 3 ENG AIR DUCT. SEE ITEM 2P IAW BAC OHM 36-10-01. NO LEAKS NOTED. ACCOMPLISHED DUCT BLEED AIR CHECK PER DHL JRH 6.5. NO LEAKS NOTED. NEEDLES MATCHED. STATUS CLOSED.