ERA11CA377

NTSB accident investigation · Cessna 150M · Ridgeway, VA · July 5, 2011

Accident · Serious injuriesData collectionFinal report
Date
July 5, 2011, 12:20 local (16:20 UTC)
Place
Ridgeway, VA
Injuries
2 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9416UCessna 150M
Defining event
Initial climb: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report October 20, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20110705015629A
Case key
81003

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 pilot's decision to takeoff using a flap setting higher than the manufacturer's recommended setting for takeoff.

Findings · 7

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.

Info processing/decision: decision making/judgmentPersonnel issues › Action/decision · Instructor/check pilotCessna 150M: 9 casesAll aircraft: 3,098 casesProbable cause
Planning/preparationPersonnel issues › Task performance · Instructor/check pilotCessna 150M: 1 caseAll aircraft: 113 casesProbable cause
Planning/preparationPersonnel issues › Task performance · PilotCessna 150M: 1 caseAll aircraft: 113 casesProbable cause
Aircraft capability: climb capabilityAircraft › Aircraft oper/perf/capability · Not specifiedCessna 150M: 1 caseAll aircraft: 183 cases
Planning/preparation: weight/balance calculationsPersonnel issues › Task performance · Not specifiedCessna 150M: 1 caseAll aircraft: 110 casesProbable cause
Use of equip/info: use of policy/procedurePersonnel issues › Task performance · Not specifiedCessna 150M: 3 casesAll aircraft: 191 casesProbable cause

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 certified flight instructor (CFI) and his student completed the preflight inspection and engine run up. The airplane became airborne about 1/3 way down the runway, climbed slowly and collided with trees at the departure end of the runway. The airplane descended, impacted the ground and came to rest inverted. A postaccident examination revealed the airplane was at or slightly over the maximum takeoff weight, and the flaps were set at 10-degrees. According to the airplane's pilot operating handbook, the best rate of climb with no obstacles should be performed with zero flaps. The CFI reported that there were no anomalies that would have precluded normal operation.

Factual narrative

According to the flight instructor, he and the private pilot under instruction filled the fuel tanks, performed a preflight inspection, taxied to the runway and completed an engine run up. They began the takeoff roll, with the flaps set at 10 degrees, from the 3,000-foot-long,up-sloped, turf runway and the airplane became airborne about one-third down the runway. The airplane climbed slowly and the flight instructor realized that it would not be able to clear the trees at the end of the runway. The private pilot applied the left rudder in order to turn the airplane and stay clear of the trees, but soon the instructor took the flight controls because he realized that the airplane was going to impact the trees. The airplane struck the trees approximately 20 feet from the tops, impacted the ground, and came to rest inverted. During the accident sequence, the fuselage, wings, and empennage were substantially damaged. The flight instructor reported there were no preexisting mechanical anomalies with the airplane. Weight and balance calculations revealed that the airplane was at or slightly over the maximum takeoff weight provided by manufacturer. Also, the owner's manual stated that the best rate of climb was with flaps up and that the "use of 10 degrees of flaps is reserved for minimum ground runs or for take-off from soft or rough fields with no obstacles ahead."

Aircraft

Registration
N9416U
Reported as
Cessna 150M
Category
Airplane
Serial number
15078364
Engine
Cont Motor O-200 SERIES, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Davis Robert L
Registered owner
Davis Robert L
Airworthiness certificate
Standard, Utility
Last inspection
Annual · October 1, 2010
Departed
VA02 · Ridgeway, VA
Destination
MOR · Morriston, TN
Airport
VA02 · Pace Airport, runway 18, 3,000 × 150 ft, grass/turf

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
Flight instructor
Age
31
Injuries
Serious
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
September 17, 2010
Seat
Right
Flight hours
1,480 total · 200 in this make and model · 1,300 as pilot in command · 110 in the last 90 days · 40 in the last 30 days · 8 in the last 24 hours
Role
Pilot
Age
29
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
April 28, 2011
Seat
Left
Flight hours
239 total · 156 in this make and model · 172 as pilot in command · 65 in the last 90 days · 16 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 72 °F
Altimeter
30.04 inHg
Observed at
MTV, 6 nm away

Docket · 9

The files NTSB released with the investigation on August 19, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.7 MB 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.