- Date
- October 14, 2016, 10:00 local (18:00 UTC)
- Place
- Chickaloon, AK
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N488ECessna 152
- Defining event
- Takeoff: Miscellaneous/other
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 18, 2017
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20161014021439A
- Case key
- 94320
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 flight instructor's delay in aborting the takeoff from a turf runway, which resulted in a runway overrun.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The flight instructor reported that during a soft field takeoff on a private 1,800-foot turf airstrip, with 10 degrees of flaps, the airplane wheels lifted off the ground so he relaxed back pressure on the yoke, and the airplane settled back onto the ground. He further reported that after the airplane lifted off and settled back onto the ground a second time, he decided to abort the takeoff by reducing the power to idle, but the airplane lifted off the ground momentarily and settled onto the ground for a third time. The pilot firmly applied the brakes, but the airplane overran the runway. The airplane sustained substantial damage to the firewall. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The flight instructor further reported that he admits that he was late in deciding to abort the takeoff. The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3B (2016). This handbook discusses pilot actions after liftoff during soft field takeoffs and states in part: After the airplane becomes airborne, the pilot should gently lower the nose with the wheels clear of the surface to allow the airplane to accelerate to VY, or VX if obstacles must be cleared. Immediately after the airplane becomes airborne and while it accelerates, the pilot should be aware that, while transitioning out of the ground effect area, the airplane will have a tendency to settle back onto the surface. An attempt to climb prematurely or too steeply may cause the airplane to settle back to the surface as a result of the loss of ground effect. During the transition out of the ground effect area, the pilot should not attempt to climb out of ground effect before reaching the sufficient climb airspeed, as this may result in the airplane being unable to climb further, even with full power applied. Therefore, it is essential that the airplane remain in ground effect until at least VX is reached. This requires a good understanding of the control pressures, aircraft responses, visual clues, and acceleration characteristics of that particular airplane.
Factual narrative
The flight instructor reported that during a soft field takeoff on a private 1,800-foot turf airstrip, with 10 degrees of flaps, the airplane wheels lifted off the ground so he relaxed back pressure on the yoke, and the airplane settled back onto the ground. He further reported that after the airplane lifted off and settled back onto the ground a second time, he decided to abort the takeoff by reducing the power to idle, but the airplane lifted off the ground momentarily and settled onto the ground for a third time. The pilot firmly applied the brakes, but the airplane overran the runway. The airplane sustained substantial damage to the firewall. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The flight instructor further reported that he admits that he was late in deciding to abort the takeoff. The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3B (2016). This handbook discusses pilot actions after liftoff during soft field takeoffs and states in part: After the airplane becomes airborne, the pilot should gently lower the nose with the wheels clear of the surface to allow the airplane to accelerate to VY, or VX if obstacles must be cleared. Immediately after the airplane becomes airborne and while it accelerates, the pilot should be aware that, while transitioning out of the ground effect area, the airplane will have a tendency to settle back onto the surface. An attempt to climb prematurely or too steeply may cause the airplane to settle back to the surface as a result of the loss of ground effect. During the transition out of the ground effect area, the pilot should not attempt to climb out of ground effect before reaching the sufficient climb airspeed, as this may result in the airplane being unable to climb further, even with full power applied. Therefore, it is essential that the airplane remain in ground effect until at least VX is reached. This requires a good understanding of the control pressures, aircraft responses, visual clues, and acceleration characteristics of that particular airplane.
Aircraft
- Registration
- N488E
- Reported as
- Cessna 152 (NO SERIES)
- Category
- Airplane
- Serial number
- 15279654
- Built
- 1977
- Airframe hours
- 6,518
- Engine
- Lycoming O-235, 112 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Kingdom Air Corps
- Registered owner
- Kingdom Air Corps
- Airworthiness certificate
- Standard, Utility; Standard, Normal
- Last inspection
- Annual · September 6, 2016
- Departed
- AK59 · Chickaloon, AK
- Destination
- PAQ · Palmer, AK
- Airport
- AK59 · King Ranch, runway 06, 1,800 × 100 ft, grass/turf
- Equipment
- Stall warning system
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 · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 24
- Injuries
- None
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, With waivers/limitations
- Last flight review
- September 21, 2016
- Seat
- Right
- Restraint
- 4-point
- Flight hours
- 707 total · 276 in this make and model · 657 as pilot in command · 63 in the last 90 days · 26 in the last 30 days · 1 in the last 24 hours
- Role
- Student pilot
- Age
- 19
- Injuries
- None
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Restraint
- 4-point
- Flight hours
- 22 total · 4 in this make and model · 13 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 27 °F, dew point 21 °F
- Altimeter
- 29.20 inHg
- Observed at
- PAAQ, 24 nm away
Docket · 3
The files NTSB released with the investigation on December 5, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 673 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.