Service difficulty report · Tr Unit · Boeing 7372B7

Difficulty date
February 14, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N284AU
Make and model
Boeing 7372B7
Aircraft serial
23131
Part
Tr Unit
Part number
1032575
Condition
Inop
Location
E/E Compt
Part time
37,539 hours
Stage of operation
CR
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

MCO - FLT 508, EN ROUTE FROM FLL TO PIT, THE NR 1 GEN SHOWED OVERLOAD WITH A HIGH AMP READING OF 90 AMPS. THE NR 2 GEN WAS 50 AMPS. WHEN THE CREW TRIED TO DOWNLOAD, THE NR 1 GENERATOR DROPPED OFF LINE ALONG WITH FOUR CIRCUIT BREAKERS IN SEQUENCE. NR 1 MAIN FUEL BOOST PUMP, OVERHEAD 5 VOLT, NR 1 TR AND THE EQUIPMENT COOLING BLOWER. AT THIS POINT NOTICED NR 2 GENERATOR HAD A HIGH TEMPERATURE. FLT DIVERTED TO MCO AND LANDED WITHOUT FURTHER INCIDENT. MX VERIFIED THE NR 1 GENERATOR DRAWS A LOAD OF 85 AMPS AT HIGH POWER AND WITH THE APU GENERATOR ON LINE AMP LOAD IS NORMAL AT 55 AMPS. AFTER T/S, MX REMOVED AND REPLACED THE NR 1 TRU. OPS CHECK NORMAL. (M)

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