DFW06CA201

NTSB accident investigation · Cessna T210N · San Angelo, TX · August 20, 2006

Accident · No injuriesData collectionFinal report
Date
August 20, 2006, 14:15 local (19:15 UTC)
Place
San Angelo, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6602CCessna T210N
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2006
Report
Approved by Office Director
Parties
San Antonio, Texas
FAA report
20060820018469A
Case key
64376

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 failure of the landing gear to extend as result of a frayed electrical wire.

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.

Gear collapsedLanding - flare/touchdown
Gear extension - not possiblePilot in commandCause
Electrical system,electric wiring - frayedCause

Analysis

The 1,461-hour instrument rated private pilot reported that while departing on an instrument flight, the landing gear selector handle was raised to the retracted position and he observed that the green lights (down indication) went out, but the amber lights (up indication) did not illuminate. The pilot added that he attempted to use the manual gear pump to no avail. The pilot continued on with his proposed flight plan and advised air traffic control of his situation. The pilot recycled the gear selector handle several times and was not able to get a gear up or gear down indication. The pilot stated on the pilot/operator report (NTSB form 6120.1) "I elected to continue my planned flight to burn off as much fuel as reasonable, get as close to my destination as possible, and to reach good VFR conditions." The pilot made two low passes to have the tower personnel attempt to determine if the landing gear appeared down. The tower noted that the left main and the nose gear appeared to be down but that the right main gear appeared to be partially retracted and rotated. The pilot elected to land on an the 5,939-foot long, by 150-foot wide asphalt runway, which was oriented on a heading of 030 degrees. The airplane remained upright and slid-off of the runway to the right side when the airplane slowed. The pilot egressed without assistance and was not injured. A Federal Aviation Administrator inspector, who responded to the accident site, reported that the right main landing gear had collapsed and there was structural damage to the right horizontal stabilizer and the rudder. His investigation revealed that a frayed wire on the landing gear squat-switch terminal prevented power to the relay switch that controlled the landing gear activation. The weather at the airport at the time of the accident was reported as winds from 080 degrees at 8 knots, temperature of 34 degrees Celsius, with an altimeter setting of 30.03 inches of Mercury.

Factual narrative

The 1,461-hour instrument rated private pilot reported that while departing on an instrument flight, the landing gear selector handle has raised to the retracted position and he observed that the green lights (down indication) went out but the amber lights (up indication) did not illuminate. The pilot added that he attempted to use the manual gear pump to no avail. The pilot continued on with his proposed flight plan and advised air traffic control of his situation. The pilot recycled the gear selector handle several times and was not able to get a gear up or gear down indication. The pilot stated on the pilot/operator report (NTSB form 6120.1) "I elected to continue my planned flight to burn off as much fuel as reasonable, get as close to my destination as possible, and to reach good VFR conditions." The pilot made two low passes to have the tower personnel attempt to determine if the landing gear appeared down. The tower noted that the left main and the nose gear appeared to be down but that the right main gear appeared to be partially retracted and rotated. The pilot elected to land on an the 5,939-foot long, by 150-foot wide asphalt runway, which was oriented on a heading of 030 degrees. The airplane remained upright and slid-off of the runway to the right side when the airplane slowed. The pilot egressed without assistance and was not injured. A Federal Aviation Administrator inspector, who responded to the accident site, reported that the right main landing gear had collapsed and there was structural damage to the right horizontal stabilizer and the rudder. His investigation revealed that a frayed wire on the landing gear squat-switch terminal prevented power to the relay switch that controlled the landing gear activation. The weather at the airport at the time of the accident was reported as winds from 080 degrees at 8 knots, temperature of 34 degrees Celsius, with an altimeter setting of 30.03 inches of Mercury.

Aircraft

Registration
N6602C
Reported as
Cessna T210N
Category
Airplane
Serial number
21063926
Airframe hours
7,382
Engine
Teledyne Continental TSIO-520-R, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 1, 2006 · 79 hours before
Departed
TEX · Telluride, CO
Destination
SAT · San Antonio, TX
Flight plan
IFR

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
Pilot
Age
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
1,461 total · 1,231 in this make and model · 1,301 as pilot in command · 50 in the last 90 days · 20 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 63 °F
Altimeter
30.03 inHg
Observed at
SJT

FAA reports on this event · 1

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