<< >> NASA ASRS Report 943532, April 2011

A300 first officer reports system and instrument malfunctions consistent with loss of captain's pitot static system in IMC.

Attributes
ACN	943532
Time
Date	201104
Local Time Of Day	1201-1800
Place
Locale Reference	ZKC.ARTCC
State Reference	KS
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Pitot-Static System
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Experience	Flight Crew Last 90 Days 126 Flight Crew Total 9000 Flight Crew Type 4400
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Speed All Types Inflight Event / Encounter Weather / Turbulence

Narrative:

At FL320; in the weather; moderate turbulence; autopilot 1 on. Captain lost speed tape; captains altimeter became 300' higher than the first officer's altimeter and the standby altimeter. The auto-throttles went to full power; manual throttles selected after that. Small heading changes resulted in large rudder inputs by the autopilot and large roll inputs; 15-20 degrees angle of bank and nearly full rudder. Even though we were on selected altitude and airspeed we received near continuous altitude alerts and over speed alerts and warning bell. Selected 15 degree max bank angle; rudder inputs did lessen. After exiting the weather captain and first officer's selected airspeed showed 10 knots difference. Tac mode; selected a set speed then returned to econ and everything returned to normal. This is being submitted for the 300' possible altitude deviation.

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Original NASA ASRS Text

Title: A300 First Officer reports system and instrument malfunctions consistent with loss of Captain's pitot static system in IMC.

Narrative: At FL320; in the weather; moderate turbulence; Autopilot 1 on. Captain lost speed tape; Captains altimeter became 300' higher than the First Officer's altimeter and the standby altimeter. The auto-throttles went to full power; manual throttles selected after that. Small heading changes resulted in large rudder inputs by the autopilot and large roll inputs; 15-20 degrees angle of bank and nearly full rudder. Even though we were on selected altitude and airspeed we received near continuous altitude alerts and over speed alerts and warning bell. Selected 15 degree max bank angle; rudder inputs did lessen. After exiting the weather Captain and First Officer's selected airspeed showed 10 knots difference. TAC mode; selected a set speed then returned to ECON and everything returned to normal. This is being submitted for the 300' possible altitude deviation.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.