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NTSB Report

October 1, 2016 · Cessna 172 S · N497SJ

Fort Lauderdale, FL

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
October 1, 2016
Injury Outcomes
No injuries (2 uninjured)
Location
Fort Lauderdale, FL
Aircraft
Cessna 172 S (2000)
Tail Number
N497SJ
Operator
Fxe Flight Center
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA17LA026

Shortly after departing on the local flight, the pilot noticed that the engine oil temperature indicated 245°, or redline, and the engine began to run roughly. The pilot contacted air traffic control and requested to return to the airport. The controller cleared the pilot to land and advised of the wind conditions. Upon touchdown, the airplane bounced and came to rest on the runway, resulting in substantial damage. On-scene examination revealed damage consistent with the airplane impacting the runway on the nose landing gear. Examination of the engine revealed that the vernatherm had failed, which would have resulted in elevated engine oil temperature; however, there were no other engine anomalies that would have precluded normal operation. The conditions at the time of the accident included a 50° crosswind between 7 and 14 knots. The airplane's published maximum crosswind component was 15 knots. The circumstances of the accident are consistent with the pilot's improper landing flare while landing in gusting, crosswind conditions, which resulted in the nose landing gear contacting the runway and its subsequent collapse.

NTSB Probable Cause

The pilot’s improper landing flare in gusting crosswind conditions, which resulted in a nose landing gear collapse.

Full Narrative

On October 1, 2016, about 1808 eastern daylight time, a Cessna 172S airplane, N497SJ, was substantially damaged when it was involved in an accident near Fort Lauderdale, Florida. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot's preflight inspection revealed no anomalies, and he determined that the engine contained 7 quarts of oil. He taxied to the runway, completed an engine run-up, and was cleared for takeoff. The pilot applied full throttle and checked that all engine instruments were in the "green arc," including oil temperature and oil pressure. At 2,500 feet mean sea level (msl) and 5 nautical miles northwest of the departure airport, the pilot noticed the oil temperature indicated 245°, or redline. The pilot contacted air traffic control and requested to return to the airport; shortly thereafter, the engine began running roughly. The tower controller cleared the pilot for landing, and upon touchdown, the airplane bounced and came to rest on the runway. The pilot stated that he did not go around or abort the landing because of the potential engine issue. On-scene examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the airplane contacted the runway on the nose landing gear, which was bent forward and had collapsed into the firewall. The propeller struck the runway, damaging both propeller tips. Oil was seeping from both sides of the engine cowling, both of the access doors on the cowling, and from underneath the cowling. The engine oil quantity dipstick indicated that about 3 quarts of oil remained in the engine. The oil appeared clear and free of contamination. Examination of the engine under supervision from an FAA inspector revealed no hidden damage; however, the vernatherm, would not close. The vernatherm is a thermostatic oil cooler bypass valve which allows cold engine oil to bypass the oil cooler, then closes when the oil temperature reaches about 180°F, forcing the engine oil to pass through the oil cooler. Review of air traffic control audio recordings revealed that, when providing the landing clearance, the tower controller advised the pilot that the wind was from 080° at 9 knots gusting to 18 knots, which would have resulted in a 50° left crosswind component of between 7 and 14 knots for the landing runway. According to the Cessna 172S Pilot’s Operating Handbook, the maximum demonstrated crosswind velocity was 15 knots.

Flight

Event TypeAccident
Event Time18:08 EDT
Nearest AirportFort Lauderdale Executive (0nm WSW)
Runway09
Runway Length6002 ft
Runway Width100 ft
Flight Plan FiledUnknown
Flight Plan ActivatedUnknown
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 172 S
Tail NumberN497SJ
Aircraft CategoryAir
DamageSubstantial
OperatorFxe Flight Center
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-L2A · Reciprocating · 180
Seats4

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 45 · Second Class · None
Crew 2Age 45 · None

Conditions

ConditionsVMC
LightDaylight
Wind70° @ 7 kt
Visibility10 sm
CeilingNone
Altimeter29.95 inHg
Observation Time22:16
Weather SourceWFAC

Appendix: Source Data