- Date
- August 11, 2006, 08:55 local (14:55 UTC)
- Place
- Boise, ID
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N228SHRobinson R-22B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report November 29, 2006
- Report
- Approved by Office Director
- FAA report
- 20060811015969A
- Case key
- 64328
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 instructor pilot's inadvertent excessive descent rate, and his delay of remedial action during the demonstration of a 180 degree autorotation.
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
While demonstrating a 180 degree autorotation to landing, the instructor pilot inadvertently allowed the helicopter to attain an excessive rate of descent. Although he added power and initiated a go-around, he had waited too long to begin the go-around, and he was unable to keep the helicopter from impacting the end of the runway and bouncing back into the air. After hover-taxiing to parking, the instructor inspected the helicopter, whereupon it was determined it had sustained substantial damage.
Factual narrative
While demonstrating a 180 degree autorotation to landing, the instructor pilot inadvertently allowed the helicopter to attain an excessive rate of descent. Although he added power and initiated a go-around, he had waited too long to begin the go-around, and he was unable to keep the helicopter from impacting the end of the runway and bouncing back into the air. After hover-taxiing to parking, the instructor inspected the helicopter, whereupon it was determined it had sustained substantial damage.
Aircraft
- Registration
- N228SH
- Reported as
- Robinson R-22B
- Category
- Helicopter
- Serial number
- 4014
- Engine
- Lycoming O-360-J2A, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Silver State Helicopter LLC, doing business as Helicopter Flight School
- Registered owner
- Silver State Helicopter LLC
- Airworthiness certificate
- Standard, Normal
- Departed
- KBOI · Boise Air Termi, ID
- Destination
- KBOI · Boise, ID
- Flight plan
- Company VFR
- Airport
- KBOI · Boise Air Terminal, runway 28
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
- Flight instructor
- Age
- 35
- Certificates
- Commercial, Flight instructor
- Instrument ratings
- Helicopter
- Medical
- Class 2
- Flight hours
- 440 total · 330 in this make and model · 200 in the last 90 days · 80 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.