SEA87FA145

NTSB accident investigation · Cessna T210N · Avery, ID · July 21, 1987

Accident · FatalField investigationFinal report

Date: July 21, 1987, 16:55 local (23:55 UTC)
Place: Avery, ID
Injuries: 2 fatal
Damage: Destroyed
Phase of flight: Enroute
Aircraft: N6326YCessna T210N
Weather: Day
Status: Completed · report December 27, 1988
Report: Approved by Office Director
FAA report: 19870721082659A
Case key: 40527

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Analysis

While in cruise at 15000 ft MSL, plt requested ATC deviation around tstm shown on acft stormscope. After passing, ATC gave vector to rejoin airway. Plt requested further deviation around another cell. Radio and radar contact were then lost. Investigation revealed characteristics of low level inflt breakup due pilot induced overload. Wx and radar study show acft penetrated heart of tstm of at least moderate intensity.

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.

In flight encounter with weatherCruise - normal

Weather condition - thunderstorm,level iiFactor

Weather condition - turbulence(thunderstorms)Factor

Remedial action - attemptedPilot in commandFactor

Flight into known adverse weather - inadvertentPilot in commandCause

Loss of control - in flightCruise

Airframe/component/system failure/malfunctionDescent - uncontrolled

Design stress limits of aircraft - exceededPilot in commandCause

Wing - overload

Stabilizer - overload

In flight collision with terrain/waterDescent - uncontrolled

Aircraft

Registration: N6326Y
Reported as: Cessna T210N
Category: Airplane
Serial number: 21064336
Engine: Continental TSIO-520R, 310 horsepower, reciprocating
Damage: Destroyed
Fire: On-Ground
Flight: Personal · Part 91
Registered owner: Allan E. Bagge
Airworthiness certificate: Standard, Normal
Last inspection: Annual · February 17, 1987
Departed: YYJ · Victoria
Destination: GTF · Great Falls, MT
Flight plan: IFR

N6326YRegistration cancelled Feb 1, 1991 · Cessna T210NS/N 21064336 Airframe modelCessna T210N

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: 58
Certificate: Private
Airplane ratings: Single-engine land
Instrument ratings: Airplane
Medical: Class 3, Valid Medical--w/ waivers/lim
Seat: Left
Toxicology: Performed
Flight hours: 2,700 total · 300 in this make and model · 36 in the last 90 days

Weather

Conditions: Day
Wind: Calm
Visibility: 8 statute miles
Lowest ceiling: 8,000 ft overcast
Temperature: 72 °F
Observed at: S06, 19 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.

Accident 19870721082659ACessna T210N · Avery, IDFlew into a thunderstorm en route IFR. Lost control and aircraft came apart in the air. Was trying to deviate stormJul 21, 1987 · N6326Y · Destroyed · 2 fatal