SDR ASMF201306001

Service difficulty report · Pitot Tube · Boeing 737752

Difficulty date: May 31, 2013
Submitted: July 1, 2013
Operation: Air carrier
Aircraft: N842AM
Make and model: Boeing 737752
Aircraft serial: 32842
Aircraft time: 25,516 hours, 13,459 cycles
System (JASC): 3411 · Pitot/Static System
Part: Pitot Tube
Part number: 0851HT1
Condition: Obstructed
Location: Left
Part time: 25,516 hours, 13,459 cycles
Stage of operation: TO
How discovered: V
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

ACFT REJECTED TAKEOFF AT 100 KNOTS, EICAS MESSAGE IAS DISAGREE AND EECS ALT MODE LIGHT TURNED ON. DURING MX REVISION, THE FAILURE CODES 73000852 AND 73008051 WERE SHOWN AND LT PITOT TUBE WAS DETECTED OBSTRUCTED BY SOLID PARTICLES; LEFT PITOT TUBE WAS REPLACED IAW AMM 34-11-01 AND PITOT STATIC LEAK TEST WAS PERFORMED IAW AMM 34-11-00, TESTED CORRECT. THE HIGH ENERGY STOP INSPECTION WAS NOT NECESSARY DUE TO THE MAXIMUM GROSS WEIGHT 54 800 KG AND BRAKES ON SPEED 110 KNOTS WERE NOT EXCEEDED IAW MM 05-51-07.