ASN Wikibase Occurrence # 35575
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| Date: | Saturday 3 September 1994 |
| Time: | 02:10 LT |
| Type: |  Cessna 310R |
| Owner/operator: | Smithkline Beecham Bio Labs |
| Registration: | N502SB |
| MSN: | 310R0244 |
| Total airframe hrs: | 10508 hours |
| Engine model: | CONTINENTAL IO-520-M1 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Blain, PA -
 United States of America
|
| Phase: | Unknown |
| Nature: | Executive |
| Departure airport: | West Mifflin, PA (AGC |
| Pottstown, PA (PTW | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE AIRPLANE WAS IN A CRUISE DESCENT FROM 9000 TO 7000 FEET AT NIGHT IN VISUAL METEOROLOGICAL CONDITIONS, WHEN, ACCORDING TO RECORDED RADAR DATA, THE ALTITUDE INCREASED 200 FEET AND THEN RADAR CONTACT WAS LOST AT 7800 FEET. WITNESSES SAW THE AIRPLANE IN A STEEP DESCENT AND HEARD A LOUD WHINE. THE AIRPLANE SUSTAINED INFLIGHT AIRFRAME SEPARATION. DEBRIS WAS SCATTERED OVER A DISTANCE OF ABOUT 1500 FT WITH THE HORIZONTAL STABILIZERS AND ELEVATORS FOUND NEAR THE BEGINNING OF THE WRECKAGE PATH, FOLLOWED BY THE FUSELAGE, AND ENDING WITH THE ENGINES AND PROPELLERS. THE LEFT HORIZONTAL STABILIZER HAD FAILED DOWN AND AFT. THE LEFT WING OUTBOARD OF THE LEFT ENGINE HAD FAILED DOWN AND WAS FOUND 600 FT LEFT OF THE DEBRIS TRAIL. WRINKLES IN TWO DIRECTIONS AND POPPED RIVETS WERE FOUND ON BOTH WINGS. TOXICOLOGY TESTS OF THE PILOT'S BLOOD REVEALED 0.002 UG/ML OF TETRAHYDROCANNABINOL (MARIJUANA) AND 0.011 UG/ML TETRAHYDROCANNABINOL CARBOXYLIC ACID. A TEST OF HIS URINE SHOWED 0.305 UG/ML OF TETRAHYDROCANNABINOL CARBOXYLIC ACID. THE PILOT HAD WORKED A FULL-TIME CONSTRUCTION JOB DURING THE DAY, AND HE HAD BEEN AWAKE FOR ABOUT 19 HOURS.
Probable Cause: THE PILOT'S IMPAIRMENT OF JUDGMENT AND PERFORMANCE DUE TO DRUGS, FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE, AND EXCEEDING THE DESIGN STRESS LIMITS OF THE AIRPLANE, WHICH RESULTED IN AN IN-FLIGHT BREAKUP OF THE AIRPLANE. A FACTOR RELATED TO THE ACCIDENT WAS: CONDITIONS CONDUCIVE TO FATIGUE.
Accident investigation:
 |
|
Sources:
NTSB NYC94FA166
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 19:30 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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