WPR11CA197

NTSB accident investigation · Xtremeair Sbach 342 · Springerville, AZ · April 4, 2011

Accident · No injuriesData collectionFinal report
Date
April 3, 2011, 17:40 local (Apr 4, 2011, 00:40 UTC)
Place
Springerville, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N142WPXtremeair Sbach 342
Defining event
Enroute-cruise: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed · report July 21, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110403005309A
Case key
78865

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 pilot's failure to properly secure loose objects in the cockpit area which resulted in a personal locator beacon becoming lodged in the elevator control torque tubes, restricting flight control movement.

Findings · 5

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.

Flight control system: elevator control systemAircraft › Aircraft systems · Damaged/degradedAll aircraft: 74 casesProbable cause
Object/animal/substance: debris/dirt/foreign objectEnvironmental issues › Physical environment · Effect on equipmentAll aircraft: 101 casesProbable cause
Action: lack of actionPersonnel issues › Action/decision · PilotAll aircraft: 792 casesProbable cause
Use of equip/infoPersonnel issues › Task performance · PilotAll aircraft: 111 cases
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · MalfunctionAll aircraft: 526 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

While descending from 10,500 feet to 8,500 feet on approach to the airport, the airplane encountered light turbulence and the pilot heard a noise emanating from the rear seat. The pilot immediately realized that the pitch control had become jammed and the range of available movement was minimal. He manipulated the trim to control the nose-down position, and continued the flight to the airport (the closest airport to his position). Upon crossing the threshold for landing, he reduced the power and the airplane touched down, bouncing twice before ground looping and coming to rest off the runway. A postaccident examination of the airplane revealed the pilot's personal location beacon (PLB) had become lodged in the bellcrank for the elevator torque tube. Once the PLB was removed, the elevator moved freely.

Factual narrative

The pilot was returning to home base from a fly-in event. While descending from 10,500 feet to 8,500 feet, he encountered some light turbulence and heard a noise emanating from the rear seat. He immediately realized that the pitch control had become jammed and there was minimal movement. He manipulated the trim to control the nose-down position, and continued the flight to the accident airport (the closest airport to his position). Upon crossing the threshold for landing, he reduced the power and the airplane touched down, bouncing two times before ground looping and coming to rest off the runway. After shutting the airplane down and exiting, the pilot further inspected the airplane. He found that his McMurdo personal location beacon (PLB) that he had connected to his left-hand shoulder harness and placed on the baggage tray, had fallen in between the seat support members and became lodged in the bellcrank for the elevator torque tube. Once the PLB was removed, the elevator moved freely.

Aircraft

Registration
N142WP
Reported as
Xtremeair Sbach 342
Category
Airplane
Serial number
004
Airframe hours
356
Engine
Lycoming AEIO-580-B1A, 315 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Douglas W. Jardine
Registered owner
Extreme Aerosports LLC
Airworthiness certificate
Special, Experimental (Special); Standard, Aerobatic
Departed
CDS · Childress, TX
Destination
SOW · Show Low, AZ
Airport
D68 · Springerville Municipal Airpor, runway 21, 8,422 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
December 14, 2010
Seat
Rear
Flight hours
2,167 total · 63 in this make and model · 36 in the last 90 days · 30 in the last 30 days · 9 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 27 knots, gusting 35
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 23 °F
Altimeter
29.65 inHg
Observed at
SJN, 35 nm away

Docket · 1

The files NTSB released with the investigation on June 7, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 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.