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An L29 on a training flight experienced erratic airspeed and altitude indications. The flight was aborted and returned to land.
| Attributes | |
| ACN | 870448 |
| Time | |
| Date | 201001 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Aero Vodochody Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise Climb |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Component | |
| Aircraft Component | Pitot-Static System |
| Person 1 | |
| Function | Pilot Flying |
| Qualification | Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 300 Flight Crew Total 3000 Flight Crew Type 500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While flying a VFR training mission ATC assigned an L-29C to stay 8000-8500 ft and below. Airspeed and altitude and vsi began to read erratically and did not correlate with correlating altitude. ATC called traffic above L-29C; but L-29C did not see traffic but did visually see an aircraft on the same bearing below the aircraft. Due to the apparent inaccuracy in the aircraft instrumentation flight was aborted and L-29C returned to its home airport in order to have instruments evaluated. Suspected a malfunctioning static system on the aircraft.
Original NASA ASRS Text
Title: An L29 on a training flight experienced erratic airspeed and altitude indications. The flight was aborted and returned to land.
Narrative: While flying a VFR training mission ATC assigned an L-29C to stay 8000-8500 FT and below. Airspeed and altitude and VSI began to read erratically and did not correlate with correlating altitude. ATC called traffic above L-29C; but L-29C did not see traffic but did visually see an aircraft on the same bearing below the aircraft. Due to the apparent inaccuracy in the aircraft instrumentation flight was aborted and L-29C returned to its home airport in order to have instruments evaluated. Suspected a malfunctioning static system on the aircraft.
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.