- Date
- April 4, 1986, 19:22 local (Apr 5, 1986, 01:22 UTC)
- Place
- Redwater, TX
- Injuries
- 7 fatal
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N50SKIsrael Aircraft Industries 1124A
- Weather
- Visual (VMC) · Night/dark
- Status
- Completed · report February 2, 1988
- Report
- Approved by Office Director
- Safety recommendations
- Yes
- FAA report
- 19860404012729A
- Case key
- 22166
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
Airplane crashed during a uncontrolled descent, following a turbulence upset at FL370. The upset occurred as a result of clr air turb associated with a vip lvl 6 thunderstorm located within 7 miles of the last pos of the airplane. After the upset, the airplane penetrated and descended thru the cell which contained lightning, extreme turb and severe icing. During the upset/descent both eng's flamed out and the crew's attempts to recover the airplane were unsuccessful due to conditions in the cell. Crew recv'd an improper briefing from fss and rpt'd their radar was malfunctioning to the dep controller. SIGMET and aww info was not given during the briefing. As the airplane came out of the bottom of the cell at 4,000', the crew overstressed the airplane causing the lft MLG door to separate and hit the lft horz stab which subsequently separated in overload. Impact was 82 degrees nose down. Nature of the airplane radar malf could not be determined.
Aircraft
- Registration
- N50SK
- Reported as
- Israel Aircraft Industries 1124A
- Category
- Airplane
- Serial number
- 309
- Airframe hours
- 2,745
- Engine
- Garrett TFE731-3-1G, 3,700 lbs thrust, turbo fan
- Damage
- Destroyed
- Fire
- On-Ground
- Flight
- Business · Part 91
- Operator
- Singer Corp.
- Registered owner
- Drayton Associates
- Airworthiness certificate
- Standard, Transport
- Last inspection
- Continuous airworthiness · March 7, 1986 · 45 hours before
- Departed
- RDB · Dallas, TX
- Destination
- TEB · Teterboro, NJ
- Flight plan
- IFR
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 35
- Certificates
- Airline transport, Commercial, Flight instructor, Flight engineer
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Toxicology
- Performed
- Flight hours
- 7,353 total · 657 in this make and model · 107 in the last 90 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Night/dark
- Wind
- 60° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 4,000 ft broken
- Altimeter
- 29.00 inHg
- Observed at
- TXK, 12 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.