Service difficulty report · Air Data Module · Bombdr BD1001A10

Difficulty date
January 6, 2026
Submitted
January 9, 2026
Operation
Air carrier
Aircraft
N749QS
Make and model
Bombdr BD1001A10
Aircraft serial
20713
Aircraft time
8,883 hours, 5,186 cycles
Part
Air Data Module
Part number
8221109020
Part serial
49K6T5
Condition
Faulted
Location
Zone 200
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

AT FL360 WE RECEIVED AMBER EFIS MISCOMPARE WITH AMBER ATL. THE RIGHT SIDE READ 200¿ LOWER THAN THE LT & STANDBY. WHEN SELECTING AIR DATA 1 PER THE CHECKLIST. RECEIVED FOLLOWING CYAN FAULTS: FLAPS FAULT, R ENG THRUST FAULT, L ENG THRUST FAULT, STAB TRIM FAULT & SPOILERS FAULT. INSPECTED BOTH PITOT PROBES WITH NO DEFECTS, REMOVED RT FWD CHCK PANEL 142AR, VERIFIED THAT ADC DRAIN BOWLS EMPTY. PROCEEDED COMPLY WITH PURGING OF THE PITOT STATIC SYSTEM. NO DEBRIS NOTED IN THE LINES. IAW AMM 34-11-00-100-801. REMOVED ADC 2 IAW CRC REQUEST. REMOVED ADC 2. INSTALLED OVERHAULED ADC 2. WORK PERFORMED IAW AMM 34-13-01. PERFORMED FUNCTIONAL TEST/OPS TEST WITH NO DEFECTS. WORK PERFORMED IAW AMM 34-13-01.