LAX06CA070

NTSB accident investigation · Socata TBM 700 · Lancaster, CA · December 27, 2005

Accident · Minor injuriesData collectionFinal report
Date
December 27, 2005, 14:46 local (22:46 UTC)
Place
Lancaster, CA
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N198XSocata TBM 700
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 2006
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20051227030409A
Case key
63009

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's failure to maintain adequate airspeed, and the instructor's inadequate supervision and delayed remedial action, which resulted in 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 flightApproach - vfr pattern - final approach
Airspeed(vso) - not maintainedDual studentCause
Supervision - inadequatePilot in command(cfi)Cause
Remedial action - delayedPilot in command(cfi)Cause
Stall/mush - inadvertentPilot in command(cfi)
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The airplane stalled on short final approach, and it impacted the ground. The purpose of the flight was for the student to receive dual flight instruction to become more acquainted with the airplane's handling characteristics. The student met with his certified flight instructor and received a briefing regarding the upcoming lesson involving, in part, takeoff and landing practice. The instructor directed his student to perform a simulated engine out approach, and engine power was reduced as the airplane glided toward the airport. The student entered a close in downwind approach and, at the direction of the instructor, then performed a left circling turn onto the base and final approach legs. The landing gear was lowered, and the student questioned the instructor regarding whether they could glide all the way to the runway. The instructor advised his student to maintain 90 knots airspeed. During the descent, as the airplane turned from the close in base leg onto the final approach leg, the instructor told his student "don't bank." The student rolled the wings level. Immediately thereafter, the left bank began a second time and the instructor again said, "Don't bank." The student replied, "I'm not." The instructor applied engine power and right rudder to reduce the left bank. The airplane stopped rolling left, and then rolled into a right bank, whereupon the right wing impacted the ground. At no time did the instructor direct his student to release the airplane's flight controls.

Factual narrative

On December 27, 2005, about 1446 Pacific standard time, a Socata TBM 700, N198X, collided with the ground while on short final approach to runway 06 at the General Wm. J. Fox Airfield (WJF), Lancaster, California. The right wing separated from the airframe during the subsequent impact with the ground. The airplane was substantially damaged during the impact sequence and during the post impact ground fire. The pilot receiving instruction owned the airplane. Both the airline transport certificated pilot, who was providing dual flight instruction to the airplane owner, and the owner sustained minor injuries. Visual meteorological conditions prevailed, and no flight plan had been filed. The instructional flight originated from Camarillo, California, about 1330.

Both pilots provided the National Transportation Safety Board investigator with verbal and written statements regarding the accident flight. In pertinent part, the airplane owner reported that he had recently purchased the airplane. The purpose of the flight was to receive dual flight instruction in the airplane in order to become more acquainted with its handling characteristics. The owner met with his certified flight instructor (CFI) and received a briefing regarding the upcoming lesson.

The flight was to include various maneuvers between 9,500 and 10,500 feet mean sea level. This was to be followed by takeoff and landing practice at WJF. After performing the maneuvers, the CFI directed the owner to perform a simulated engine-out approach to WJF. Accordingly, the engine power was reduced between 8 and 10 percent torque, and the owner glided toward the airport.

After arriving over the airport, the owner entered a "close in" downwind for runway 06, and the pilots received a clearance to land. At the direction of the CFI, the owner performed a "left circle base to the runway." The landing gear was lowered, and the owner questioned the CFI regarding whether they could glide all the way to the runway.

The CFI indicated to the owner that the airplane was in position to make the landing. The CFI directed the owner to maintain 90 knots airspeed. During the circling approach, as the airplane turned from the close in base leg onto the final approach leg, the CFI told the owner "don't bank." The owner rolled the wings level. Immediately thereafter, the left bank began a second time and the CFI again said, "Don't bank." The owner replied, "I'm not."

Neither pilot recalled hearing the stall warning horn activate in the manner in which it had functioned during the earlier higher altitude maneuvers. Neither pilot recalled the airplane buffeting.

The CFI applied engine power and right rudder. The airplane stopped rolling left, and then rolled into a right bank, whereupon the right wing impacted the ground.

The Federal Aviation Administration (FAA) coordinator examined the accident site and airplane wreckage. He reported observing a ground scar that was consistent with the initial point of impact being upwind of runway 06's landing threshold and beyond the north edge of the runway. The outboard lower portion of the right wing was the first airframe component to impact the ground.

According to the FAA inspector, the CFI indicated that during the last few seconds of flight he had applied full right rudder to reduce the left bank. At no time did the CFI direct his student to release the airplane's flight controls.

Runway 06 at WJF, elevation 2,348 feet mean sea level, is 7,201 feet long by 150 feet wide. At the time of the mishap, the reported weather was as follows: Wind from 050 degrees at 7 knots; 10 miles visibility; scattered clouds at 15,000 feet; and temperature/dew point at 21/4 degrees Celsius, respectively.

Aircraft

Registration
N198X
Reported as
Socata TBM 700
Category
Airplane
Serial number
138
Airframe hours
1,603
Engine
Pratt & Whitney Canada PT6A-64, turbo prop
Damage
Substantial damage
Fire
On-Ground
Flight
Instructional · Part 91
Registered owner
Clay Nordman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 1, 2005
Departed
CMA · Camarillo, CA
Destination
WJF · Lancaster, CA
Airport
WJF · General Wm. J. Fox Airfield, runway 06, 7,201 × 150 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
62
Injuries
Minor
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 1, 2005
Seat
Right
Flight hours
6,296 total · 2,921 in this make and model · 179 in the last 90 days · 63 in the last 30 days · 1 in the last 24 hours
Role
Student pilot
Age
53
Injuries
Minor
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
April 1, 2005
Seat
Left
Flight hours
1,126 total · 15 in this make and model · 18 in the last 90 days · 7 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 7 knots
Visibility
10 statute miles
Lowest ceiling
15,000 ft broken
Temperature
70 °F, dew point 25 °F
Altimeter
30.20 inHg
Observed at
WJF

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.