- Date
- August 4, 1985, 09:30 local (15:30 UTC)
- Place
- Caldwell, ID
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N5511XRockwell S2R
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19850804036139A
- Case key
- 40254
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
An aero commander S2R had been modified by the installation of an air research TPE-331-43A power plant. During an aerial application flight the pilot heard a loud bang and experienced a loss of power. Investigation revealed the first stage turbine whee, part #867569-4 had disintegrated.
Aircraft
- Registration
- N5511X
- Reported as
- Rockwell S2R
- Category
- Airplane
- Serial number
- 1711R
- Airframe hours
- 29,558
- Engine
- Airesearch TPE-331-43A, 575 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Davison'S Air Svc, Inc
- Registered owner
- William F. Hubler
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · March 21, 1985 · 186 hours before
- Departed
- G4U · Caldwell, ID
- Airport
- Unknown
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
- 37
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Center
- Flight hours
- 3,785 total · 3,735 as pilot in command · 588 in the last 90 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 68 °F, dew point -0 °F
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 N5511X · 1
Matched to the same aircraft by N-number and date.