LAX07CA256

NTSB accident investigation · Cessna 150L · Keystone Height, FL · August 16, 2007

Accident · No injuriesData collectionFinal report
Date
August 16, 2007, 15:00 local (19:00 UTC)
Place
Keystone Height, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N11449Cessna 150L
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2007
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
66543

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

the student pilot's excessive retraction of flaps and failure to attain an adequate airspeed during a go-around that led to a stall/mush.

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.

Loss of control - in flightGo-around (vfr)
Raising of flaps - excessivePilot in commandCause
Airspeed - not attainedPilot in commandCause
Stall/mush - inadvertentPilot in command
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - runway

Analysis

The airplane landed hard on the runway during an attempted go-around, causing substantial damage. In the flare for landing the student pilot decided to do a go-around due to the effects of a wind gust. The student added full power, shut off the carburetor heat, and reduced the flaps to 10 degrees. Initially the airplane began to climb, and then "dropped and landed hard" on the runway. According to the Cessna 150L owner's manual, during a go-around, the flaps should be reduced to 20 degrees after application of full power. After a safe airspeed has been attained the flaps should be slowly retracted to the full up position.

Factual narrative

According to the student pilot the landing approach was conducted at 71 knots with full flaps, and the airplane was aligned with the centerline of runway 22. He noted the windsock was flat but pointing in a crosswind direction relative to the runway. He said that as he flared for landing, the wind picked up in the crosswind direction and turned the airplane into the wind. He corrected for the wind condition, but felt unsure of a safe landing. The student pilot initiated the go-around with the application of full throttle, turned off the carburetor heat, and retracted the flaps to 10 degrees. He stated that the airplane was climbing and then "just dropped and landed hard." The pilot reported that the AWOS was not reporting gusty wind conditions at the time, but the winds were from 230 degrees at less than 6 knots.

According to the Cessna 150L owner's manual, "in a balked landing (go-around) climb; the wing flap setting should be reduced to 20 degrees after full power is applied. Upon reaching a safe airspeed, the flaps should be slowly retracted to full up position."

Aircraft

Registration
N11449
Reported as
Cessna 150L
Category
Airplane
Serial number
75150432
Airframe hours
7,735
Engine
Teledyne Continental O-200-A, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Robert Oehl
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · July 1, 2007
Departed
42J · Keystone Height, FL
Destination
42J · Keystone Height, FL
Airport
42J · Keystone Heights, runway 22, 5,044 × 100 ft, asphalt

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
Student pilot
Age
44
Injuries
None
Certificate
Student
Medical
Class 3
Flight hours
29 total · 20 in this make and model · 2 as pilot in command · 10 in the last 90 days · 3 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 70 °F
Altimeter
30.04 inHg