What was found
(AUS) NO2 AIR DATA COMPUTER (ADC) FAILED. INVESTIGATION FOUND A DRY SOLDER JOINT ON A PIN CONNECTION AND THE HEAT SINK COMPOUND BETWEEN THE POWER DIODES AND THEIR INTERFACE WITH THE MODULE CIRCUIT CARD HAD DETERIORATED.
- Difficulty date
- May 27, 1997
- Submitted
- March 26, 2000
- Operation
- General aviation
- Make and model
- Boeing 727277
- Engine
- Pwa JT8D15
- System (JASC)
- 3417 · Air Data Computer
- Part
- Adc
- Part number
- HG48B13
- Condition
- Faulty
- Location
- Air Data Comp
- Stage of operation
- CR
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.