- Date
- May 5, 1984, 20:02 local (May 6, 1984, 01:02 UTC)
- Place
- Ridge Farm, IL
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N13012Bell 47D-1
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19840505017089A
- Case key
- 12603
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
The helicopter rolled over after a hard landing following loss of rotor RPM. The plt reported that during initial climb at about 300 ft AGL the rotor decreased about 500 RPM. He tried to regain rotor RPM until about 100 ft AGL and then tried an autorotation. Upon landing the acft rolled over. Post accident investigation revealed no mechanical discrepencies with the acft.
Aircraft
- Registration
- N13012
- Reported as
- Bell 47D-1
- Category
- Helicopter
- Serial number
- 648
- Airframe hours
- 2,264
- Engine
- Franklin 6 VS-335-A, 225 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Ag Air, Inc.
- Registered owner
- Illiana Helicopter Service Inc
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · May 31, 1985 · 74 hours before
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
- 27
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Single-engine land, Single-engine sea, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 1,751 total · 313 in this make and model · 1,511 as pilot in command · 6 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 12 statute miles
- Lowest ceiling
- 15,000 ft overcast
- Temperature
- 63 °F, dew point 41 °F
- Altimeter
- 29.00 inHg
- Observed at
- CMI, 25 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.
Other investigations on N13012 · 3
Matched to the same aircraft by N-number and date.