Service difficulty report · Module · Boeing 7378

Difficulty date
August 4, 2024
Submitted
August 7, 2024
Operation
Air carrier
Aircraft
N47281
Make and model
Boeing 7378
Aircraft serial
62535
Aircraft time
6,321 hours, 2,238 cycles
Part
Module
Part number
C17001DA01
Part serial
24122
Condition
Faulty
Location
Air Data
Part time
6,301 hours, 2,230 cycles
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

REJECT T/O 100-105KTS AIRSPEED DISAGREE CREW REPORTS FO AIRSPEED STOPPED ACCELERATING. CAPT AIRSPEED KEPT CLIMBING. THEN THEY REJECTED TAKEOFF. APPROX 20 KNOT DIFFERENCE. PERFORMED DETAILED INSPECTION OF THE PITOT AND STATIC DRAINS AS REQUIRED, FOUND NO EVIDENCE OF MOISTURE AND OR DEBRI REF AMM 34-11-00-210-801 AND AMM 34-11-00-210-802 MIANTENANCE MESSAGE 31-03120 " IAS DISAGREE", NO OTHER RELATED MESSAGES FOUND, PER FIM 31-65 TASK B70, REQUIRES PITOT STATIC SYSTEM FLUSHING ACP FIM 31-65 TASK B70 PITOT SYSTEM FLUSH. NO DEBRIS FOUND. RPL PITOT ADM IAW AMM34-21-04-400-801. ACP R/H PITOT SYSTEM LEAK TEST REF AMM34-11-11-790-807. LEAK CHECK OK. ALL OPS CHECK NORMAL.PARTS USED: 42-3413-9-0001,QTY :1 PARTS USED: ADD EMP:U330401 42-3413-9-0001,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1722908 SN OFF 4122 IPC REFERENCE # IPC 34-11 COMPLIED WITH INSPECTIONS REF GMM 09-10-05. MODULE, AIR DAT OFF 42-3413-9-0001 2412 ON 42-3413-9-0001 8156

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