What was found
DURING TRANSIT CHECK, CAPTAIN REPORTED FAST/SLOW FLAGS IN BOTH ADI´S AND DIFFERENCE OF 150 FEET BETWEEN ALTIMETERS. LT ADC WAS REPLACED IAW MM 34-16-01, TEST CORRECT.
- Difficulty date
- June 21, 2004
- Submitted
- June 29, 2004
- Operation
- Air carrier
- Aircraft
- N755RA
- Make and model
- Doug DC987
- Aircraft serial
- 49727
- Aircraft time
- 29,427 hours, 19,744 cycles
- Engine
- Pwa JT8D*
- System (JASC)
- 3420 · Attitude and Direction Data System
- Part
- Adc
- Part number
- HG280D80
- Part serial
- 051734
- Condition
- Failed
- Location
- Cockpit
- Part time
- 5,107 hours, 3,477 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.