ASN Wikibase Occurrence # 36496
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| Date: | Sunday 14 March 1993 |
| Time: | 21:42 LT |
| Type: |  Piper PA-28R-201T |
| Owner/operator: | Kevin L. Tegmeyer |
| Registration: | N47402 |
| MSN: | 28R-7703371 |
| Total airframe hrs: | 2170 hours |
| Engine model: | CONTINENTAL TSIO-360-FB |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Radium Springs , NM -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Albuquerque, NM |
| Las Cruces, NM (KLRU) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AT 10,000 FT, THE PILOT REPORTED THAT SHE WAS IN LIGHT SNOW. SUBSEQUENTLY, SHE REPORTED THAT SHE HAD LOST THE ATTITUDE INDICATOR, WAS IN IMC, AND '...WE'RE IN TROUBLE.' NO FURTHER TRANSMISSIONS WERE RECEIVED. THE AIRPLANE SUBSEQUENTLY BROKE UP IN FLIGHT. MICROSCOPIC EXAMINATION OF THE WARNING LIGHT BULB FOR THE VACUUM SYSTEM REVEALED A STRETCHED FILAMENT. PITTING AND SCORING WAS NOTED IN THE BASE OF THE VACUUM PUMP CASE. ENERGY DISPERSIVE X-RAY SPECTROSCOPY PRODUCED SPECTRA OF PARTICLES FOUND IN THE VACUUM PUMP REGULATOR VALVE SIMILAR TO THAT OF THE VACUUM PUMP ROTOR AND VANE FRAGMENTS. WITH 2.2 INCHES OF MERCURY DIFFERENTIAL AIR PRESSURE, THE NORMAL TEST PRESSURE, THE ROTOR OF THE ATTITUDE GYRO ASSEMBLY STARTED, BUT THE ROTOR BEARINGS WERE VERY ROUGH. THIS WAS THE PILOT'S FIRST KNOWN FLIGHT IN ACTUAL INSTRUMENT METEOROLOGICAL CONDITIONS.
Probable Cause: A TOTAL FAILURE OF THE AIRPLANE'S VACUUM SYSTEM. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE DARK NIGHT, SNOW, THE PILOT'S LOSS OF AIRCRAFT CONTROL, AND THE PILOT'S LACK OF EXPERIENCE IN FLYING IN ACTUAL INTRUMENT METEOROLOGICAL CONDITIONS.
Accident investigation:
 |
|
Sources:
NTSB FTW93FA105
History of this aircraft
Other occurrences involving this aircraft
| 2 September 1983 | N47402 | Fashion Corner Inc. | 0 | Anton Chico, NM | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 15:15 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Accident report] |
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