- Date
- May 16, 1991, 10:20 local (15:20 UTC)
- Place
- Manor, TX
- Injuries
- 4 fatal
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N9435QBeech V35B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report December 4, 1992
- Report
- Approved by Office Director
- FAA report
- 19910516016219A
- Case key
- 23260
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The NTSB’s determination of the probable cause, and any contributing factors.
The pilot's operation of the aircraft at a gross weight and center of gravity which exceeded the certificated operating limitations, resulting in loss of control and structural overload. Turbulence was a related factor.
Analysis
The plt lost ctl of the acft in IFR conds as the plane was dscndg thru abt 6000' MSL, in an area of convective activity with moderate to severe turbc & up/down drafts. Both wings sepd fm the acft & wreckage was scattered over an area of aprx 1.5 mi. Calculations showed that at the time of the acdnt, the acft's gross wt was 29 lbs over its max limit, and the center-of-gravity (CG) was abt 3.3 to 5.3 inches behind the aft limit. Under these conds, the acft's maneuvering stability & stick force per 'g' characteristics would have been seriously degraded. In turn, this would have allowed the plt to exceed the structural design limits of the acft with little or no effort. An exam of the wreckage disclosed evidence of apparent flap asymmetry, a cond which way have occurred drg the in-flt breakup of the acft.
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.
Aircraft
- Registration
- N9435Q
- Reported as
- Beech V35B
- Category
- Airplane
- Serial number
- D-9317
- Airframe hours
- 3,883
- Engine
- Continental IO-520-BA, 285 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Business · Part 91
- Operator
- Bonanza 9435 Quebec
- Registered owner
- Bonanza 9435 Quebec
- Airworthiness certificate
- Standard, Utility
- Last inspection
- Annual · April 26, 1991 · 7 hours before
- Departed
- ADS · Addison, TX
- Destination
- AUS · Austin, TX
- 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
- 36
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Toxicology
- Performed
- Flight hours
- 315 total · 38 in this make and model · 241 as pilot in command · 5 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 210° at 9 knots
- Visibility
- 5 statute miles
- Lowest ceiling
- 1,700 ft broken
- Temperature
- 81 °F, dew point 73 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N9435Q · 1
Matched to the same aircraft by N-number and date.