Service difficulty report · Pitot Head · Cessna 750

Difficulty date
May 9, 2008
Submitted
May 13, 2008
Operation
Air carrier
Aircraft
N921QS
Make and model
Cessna 750
Aircraft serial
7500241
Aircraft time
3,154 hours, 1,986 cycles
Engine
Allsn AE3007C
Part
Pitot Head
Part number
67083039
Part serial
C0796C0668
Condition
Failed
Location
Flt Guidance
Part time
3,154 hours, 1,986 cycles
Stage of operation
CL
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

CLIMBING THROUGHT 10,000 FT, WE HAD A DUAL FGC FAILURE. INSPECTED LT AND RT PITOT PROBES. FOUND RT FWD DRAIN TO BE BLOCKED. THE RT AFT DRAIN, AND BOTH LT DRAINS HAVE DEBRIS INSIDE. REMOVED FAILED LT AND RT PITOT PROBES. INSTALLED NEW LT AND RT PITOT PROBES, PILOTS PITOT/STATIC LEAK CHECKS GOOD. COPILOTS PITOT/STATIC LEAK CHECKS GOOD. PILOT AND COPILOT AIRSPEED .ALT, AND MACH ACCURACY CHECKS GOOD. NR 1 AND 2 TRANSPONDER ALT. ENCODING CHECKS GOOD. LT AND RT PITOT HEAT TESTS GOOD. REF MM 34-11-01

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