What was found
IN FLIGHT, FOUND THAT NR 1 HF CAUSES FIRE WARNING BELLS FOR LOWER CARGO, CAPTAINS CAS FLAG COMES IN TO VIEW ON A/S INDICATOR AND F/O'S ALTIMETER GOES TO STANDBY. REPLACED NR 1 HF COUPLER. OPS CHECK OK PER MM 23-11-00 PAGE 501. (M)
- Difficulty date
- April 22, 1997
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N604FF
- Make and model
- Boeing 747121
- Aircraft serial
- 19659
- System (JASC)
- 2310 · HF Communications System
- Part
- Hf Coupler
- Part number
- 7771328001
- Condition
- Defective
- Location
- Lt Wing Tip
- Stage of operation
- CR
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.