Service difficulty report · Pitot Tube · Boeing 747122

Difficulty date
July 23, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N4727U
Make and model
Boeing 747122
Aircraft serial
19883
Engine
Pwa JT9D7A
Part
Pitot Tube
Condition
Plugged
Location
Right
Stage of operation
TO
Nature of condition
O
Precautionary procedure
C, D

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

What was found

FIRST OFFICER'S AIRSPEED INDICATOR INOPERATIVE. READS ZERO ALL THE TIME. ABORTED TAKEOFF AT 100 KNOTS. PROBLEM CAUSED BY BLOCKED PITOT INPUT. SOURCE OF BLOCKAGE CANNOT BE DETERMINED; HOWEVER, MATERIAL REMOVED FROM PROBE WAS MOST LIKELY A CARBONIZED INSECT. NO COMPONENT FAILURE.