Service difficulty report · Pitot Tube · Doug MD11F

Difficulty date
August 25, 2009
Submitted
August 26, 2009
Operation
Air carrier
Aircraft
N256UP
Make and model
Doug MD11F
Aircraft serial
48405
Part
Pitot Tube
Part number
851DK
Condition
Obstructed
Location
Pitot/Static Sys
Stage of operation
CL
How discovered
O
Nature of condition
S
Precautionary procedure
A

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

What was found

INSPECTION TYPE:N/A NUMEROUS ERRONEOUS INDICATIONS STARTING AFTER V-1 LEAD TO PERFORMING AN AIRSPEED LOST CHECKLIST, SUSPECT NR 2 ADC BAD DATA. FOUND OBSTRUCTIONS IN F/O AND AUX PITOT TUBES. CLEANED AS REQ'D AND OPS CHECKED PER MM 34-11-00-2. OPS AND LEAK CHECK GOOD.

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