GAA17CA051

NTSB accident investigation · Cessna 152 · Chickaloon, AK · October 14, 2016

Accident · No injuriesData collectionFinal report
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.

Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotCessna 152: 15 casesAll aircraft: 894 casesProbable cause
Action: incorrect action performancePersonnel issues › Action/decision · Instructor/check pilotCessna 152: 22 casesAll aircraft: 1,386 casesProbable cause
Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Decision related to conditionCessna 152: 5 casesAll aircraft: 264 cases

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.