Service difficulty report · Nr 5 Carbon Seal · Boeing 737222

Difficulty date
February 17, 1995
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N144AW
Make and model
Boeing 737222
Aircraft serial
19074
Engine
Pwa JT8D9A
Part
Nr 5 Carbon Seal
Part number
570023
Condition
Deteriorated
Location
Nr 1 Engine
Stage of operation
CL
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PHX - FLT 45 - CORRECTION TO SUPPLEMENTAL/CLOSED SDR DATED 95-02-09; ORIGINAL SDR DATED 94-08-24. LAS/LAX - ON CLIMB-OUT, NR 1 ENGINE HIGH OIL TEMP AND APU GENERATOR WENT OFF LINE. NR 1 GENERATOR PLACARDED INOPERATIVE. ACFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MX COMPLIED WITH NR 1 ENGINE CHANGE. ENGINE WAS DISASSEMBLED AND ANALYZED AT GTC IN EAST GRANDBY, CT. DUE TO ENGINE'S HIGH TIME SINCE OVERHAUL AND NORMAL DETERIORATION OF BEARING CARBON SEALS (TSO 18315, CSO 16693), HOT COMPRESSED AIR USED TO PRESSURIZE THE CARBON SEALS 'LEAKS' THROUGH TO THE OILED BEARING AREA RESULTING IN THE OIL BEING HEATED. THE RESULT IS HIGH BREATHER PRESSURE AND HIGH OIL TEMPERATURE. (X)