Service difficulty report · Indicator · Boeing 737322

Difficulty date
September 17, 2003
Submitted
September 23, 2003
Operation
Air carrier
Aircraft
N399UA
Make and model
Boeing 737322
Aircraft serial
24674
Aircraft time
37,851 hours, 26,503 cycles
Engine
Ge CFM56*
Part
Indicator
Condition
Failed
Location
Vor System
Stage of operation
CL
How discovered
O
Nature of condition
I
Precautionary procedure
A

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

What was found

ON CLIMBOUT FROM GEG PREVIOUS WRITEUPS RETURNS CAPT LOST VOR WITH LOC DISPLAY ON EADI & VOR DISPLAY ON EHSI. FMC POS INIT PG DID NOT SHOW GW, FUEL OR ZFW. THEN ON DESCENT BACK INTO GEG THE NR 2 VOR FAILED WITH FLAG ON RDDMI BUT NO FLAGS ON ADI-HSI. NR 1 ILS INOP BUT NR 2 OK. DAA NR 1 (MR41922-224) WAS REMOVED. HOWEVER BOTH SHOP AND HONEYWELL TESTING FOUND NO FAULTS. TWO NR 2 VOR RECEIVERS WERE REPLACED, WITH THE MOST RECENT REPLACEMENT OCCURING ON 5 OCTOBER.