SEA07LA166

NTSB accident investigation · Cessna T188C · Rock Springs, MT · June 10, 2007

Accident · No injuriesLimited investigationFinal report
Date
June 10, 2007, 09:00 local (15:00 UTC)
Place
Rock Springs, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2535JCessna T188C
Weather
Visual (VMC) · Day
Status
Completed · report September 27, 2007
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20070610008669A
Case key
66006

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 NTSB’s determination of the probable cause, and any contributing factors.

The failure of the left main landing gear due to fatigue.

Analysis

On the fourth takeoff of the morning, with a 170 gallon chemical load and full fuel tanks, the takeoff run had progressed about 30 to 35 yards when the left landing gear broke. The airplane's left wing subsequently impacted the ground before the airplane went up on its nose, then back down on its right landing gear. An FAA inspector determined that the left landing gear leg failed 6 inches above the wheel.

Factual narrative

On June 10, 2007, approximately 0900 mountain daylight time, a Cessna T188C airplane, N2535J, sustained substantial damage as a result of the left main landing gear collapsing during the takeoff roll near Rock Springs, Montana. The certificated commercial pilot, who was the sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed for the aerial application flight, which was being operated in accordance with 14 CFR Part 137, and a flight plan was not filed. The flight was originating at the time of the accident.

In a telephone interview with the NTSB investigator-in-charge (IIIC), the pilot reported that this was the 4th takeoff of the morning, with a chemical load of 170 gallons and full fuel tanks. The pilot stated that after the airplane had progressed about 30 to 35 yards down the runway during the takeoff roll the left landing gear broke, followed by the airplane's left wing hitting the ground. The pilot further stated that the airplane then went up on its nose before coming back down on its right landing gear. The pilot reported that the airplane came to rest in an upright position facing in the direction opposite that of the takeoff roll.

In a written statement and in telephone conversations with the IIC, a Federal Aviation Administration airworthiness inspector, who traveled to the accident site, visually inspected the left main landing gear leg and determined that the component failed 6 inches above the wheel.

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 collapsedTakeoff - roll/run
Landing gear - failureCause
On ground/water encounter with terrain/waterTakeoff - roll/run
Terrain condition - runway

Aircraft

Registration
N2535J
Reported as
Cessna T188C
Category
Airplane
Serial number
T18803471T
Airframe hours
7,163
Engine
Continental TSIO-520, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Dennis A. Pluhar
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 1, 2007 · 181 hours before
Departed
Rock Springs, MT
Airport
pilot's private airstrip, runway 040, 3,000 × 50 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
April 1, 2007
Seat
Single
Flight hours
7,785 total · 6,500 in this make and model · 7,785 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 52 °F
Altimeter
29.76 inHg
Observed at
MLS, 37 nm away

FAA reports on this event · 1

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

Other investigations on N2535J · 1

Matched to the same aircraft by N-number and date.