DEN08LA159

NTSB accident investigation · Cessna 172RG · St. Louis, MO · September 19, 2008

Accident · No injuriesLimited investigationFinal report
Date
September 19, 2008, 16:03 local (21:03 UTC)
Place
St. Louis, MO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6416VCessna 172RG
Defining event
Landing-flare/touchdown: Landing gear not configured
Weather
Visual (VMC) · Day
Status
Completed · report December 3, 2008
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20080919848569A
Case key
68980

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The improper maintenance performed resulting in a jammed nose landing gear door preventing the extension of the nose landing gear.

Findings · 3

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.

Landing gear system: nose/tail landing gearAircraft › Aircraft systems · Incorrect service/maintenanceCessna 172RG: 3 casesAll aircraft: 185 casesProbable cause
Landing gear system: landing gear door retract secAircraft › Aircraft systems · Damaged/degradedCessna 172RG: 1 caseAll aircraft: 5 casesProbable cause
Maintenance: repairPersonnel issues › Task performance · Maintenance personnelCessna 172RG: 1 caseAll aircraft: 99 casesProbable cause

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

According to the pilot, he had just departed when he noted that he had a "landing gear problem." After multiple attempts to extend the landing gear, the pilot performed a gear up landing, resulting in substantial damage to the fuselage. Examination revealed that the nose gear door was jammed and had prevented the nose landing gear from extending. An examination of the maintenance records revealed that the day prior to the accident, the airplane was in for maintenance directly related to the landing gear door and damage to the door lip. The mechanic performed two gear swings without issue and the airplane was returned to service with the intent to repair the gear door damage when the airplane was in for an annual inspection in October.

Factual narrative

On September 19, 2008, at 1603 central daylight time, a Cessna 172RG, N6416V, owned by Convergent Aviation Ventures LLC, and operated by an airline transport certificated pilot, was substantially damaged during a gear-up landing at Spirit of St Louis Airport, St Louis, Missouri. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations Part 91 without a flight plan. The pilot was not injured. The local flight departed at 1250. According to the accident report form submitted by the pilot, he had just departed when he noted that he had a "landing gear problem." The pilot notified the air traffic control tower and they confirmed that the main landing gear was extended but the nose landing gear was not. The pilot discussed the situation with "Skyline" over the radio and flew the airplane for the next three hours to burn off fuel. During this time, the pilot made numerous attempts to pump down the landing gear without success. The pilot returned to the airport and attempted three touch and go landings in order to "force" or jolt the nose gear down. Ultimately the pilot elected to land with the landing gear retracted. According to the Federal Aviation Administration inspector who examined the airplane, the damage to the fuselage extended through the skin, into the bulkhead and would require major repair. Further examination revealed that the nose gear door was jammed and had prevented the nose landing gear from extending. An examination of the maintenance records revealed that the day prior to the accident, the airplane was in for maintenance directly related to the landing gear door and damage to the door lip. The mechanic performed two gear swings without issue and the airplane was returned to service with the intent to repair the gear door damage when the airplane was in for an annual inspection in October.

Aircraft

Registration
N6416V
Reported as
Cessna 172RG
Category
Airplane
Airframe hours
8,321.4
Engine
Lycoming O-360-F, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 12, 2008
Departed
SUS · St. Louis, MO
Destination
SUS · St. Louis, MO
Airport
SUS · Spirit of St. Louis Airport, runway 08L, 5,000 × 75 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
62
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
November 3, 2006
Seat
Left
Flight hours
4,000 total · 5 in this make and model · 2,500 as pilot in command · 5 in the last 90 days · 5 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
82 °F, dew point 59 °F
Altimeter
30.14 inHg
Observed at
KSTL

FAA reports on this event · 1

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