DEN03LA144

NTSB accident investigation · Luscombe 8E · Longmont, CO · August 16, 2003

Accident · No injuriesLimited investigationFinal report
Date
August 16, 2003, 11:20 local (17:20 UTC)
Place
Longmont, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1614KLuscombe 8E
Weather
Visual (VMC) · Day
Status
Completed · report September 1, 2004
Report
Approved by Office Director
Parties
Denver, Colorado
FAA report
20030816019809A
Case key
57710

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

Separation of the landing gear tire valve stem resulting in the left main tire deflating, and the pilot's inability to maintain aircraft control.

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.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,tire - deflatedCause
Landing gear,tire valve stem - separation
Nose overLanding - roll
Aircraft control - not possiblePilot in commandCause

Analysis

The pilot said he was practicing touch-and-go landings. He said that on a previous 2-point landing, "it felt like someone was pushing and releasing the brakes. It was not severe so [he] continued to takeoff speed and rotated." The next landing was a 3-point landing and "touchdown and rollout initially were fine." When he applied heel brakes, "the left wheel folded and started flapping" and the airplane yawed to the left. The pilot corrected with right rudder. The pilot said there was insufficient airflow to hold the tail down, and the nose and prop struck the ground. The airplane skidded approximately 10 feet on the nose before nosing over on the runway. Postaccident inspection by a mechanic revealed the left main tire was flat. He said the tire looked normal and "showed no protrusions." The mechanic said the valve stem was "torn from the tube with no indications of dry-rotting in the rubber or misalignment of the tube. There was a small hole, most likely caused by pinching during the rollout of the aircraft with the tube deflated."

Factual narrative

On August 16, 2003, approximately 1120 mountain daylight time, a Luscombe 8E, N1614K, registered to and operated by the pilot, was substantially damaged when it nosed over and impacted terrain while landing at Vance Brand Airport, Longmont, Colorado. The commercial pilot-in-command and his passenger were not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated at Longmont at approximately 1030.

The pilot said he was practicing touch-and-go landings. He said that on a previous 2-point landing, "it felt like someone was pushing and releasing the brakes. It was not severe so [he] continued to takeoff speed and rotated." The next landing was a 3-point landing and "touchdown and rollout initially were fine." When he applied heel brakes, "the left wheel folded and started flapping," and the airplane yawed to the left. The pilot corrected with right rudder. The pilot said there was insufficient airflow to hold the tail down, and the nose and prop struck the ground, skidding approximately 10 feet on the nose. The airplane nosed over on the runway.

Postaccident inspection by a mechanic revealed a flat left main tire was flat. He said the tire looked normal and "showed no protrusions." The mechanic said the valve stem was "torn from the tube with no indications of dry-rotting in the rubber or misalignment of the tube. There was a small hole, most likely caused by pinching during the rollout of the aircraft with the tube deflated." The top of the vertical stabilizer was crushed, the right wing spar and lift strut were bent, the aft portion of the fuselage was buckled, both main landing gear wheel pants were fractured, the right and left passenger doors were separated, and the lower engine cowling and propeller spinner were scraped.

Aircraft

Registration
N1614K
Reported as
Luscombe 8E
Category
Airplane
Serial number
4341
Airframe hours
3,081
Engine
Lycoming O-290-D, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Benjamin A. Scharf
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · April 5, 2003 · 27.9 hours before
Departed
2V2 · Longmont, CO
Destination
2V2 · Longmont, CO
Airport
2V2 · Vance Brand, runway 29, 4,800 × 75 ft, concrete

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
22
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
June 24, 2002
Seat
Left
Flight hours
437 total · 15 in this make and model · 301 as pilot in command · 80 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 12 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 46 °F
Altimeter
30.20 inHg
Observed at
BJC, 16 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 N1614K · 1

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