FTW91FA080 · Beech V35B
Beech V35B · Accident: loss of control in flight en route
From Addison Airport (ADS) to Austin Bergstrom International Airport (AUS)
Event
- NTSB case
- FTW91FA080
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 4 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Beech V35B
- Aircraft type
- Beechcraft 35
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N9435Q
- Operator
- Bonanza 9435 Quebec
- Onboard fatalities
- Unknown
- Route
- From Addison Airport (ADS), Addison, TXTo Austin Bergstrom International Airport (AUS), Austin, TX
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- En route · descent
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control in flight
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Aircraft weight and balance, exceeded
- Pilot in command › Design stress limits of aircraft, exceeded
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
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.
Probable cause
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.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW91FA080
- Event ID
- 20001212X17002
- Case number
- FTW91FA080
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: ba22f57e798bbefe922893cc1af0aedba6c29540b4a64ec62c32e80489fb6c2f; retrieved 2026-09-21T01:49:11.721Z.