DEN02LA035

NTSB accident investigation · Cessna 310B · Provo, UT · March 19, 2002

Accident · No injuriesLimited investigationFinal report
Date
March 19, 2002, 13:55 local (20:55 UTC)
Place
Provo, UT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N5381ACessna 310B
Weather
Visual (VMC) · Day
Status
Completed · report April 1, 2003
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20020319005309A
Case key
54434

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

Failure of the nose landing gear retraction/extension assembly for an undetermined reason, which resulted in collapse of the nose landing gear on landing.

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 - roll
Reason for occurrence undetermined
Landing gear,normal retraction/extension assembly - failureCause
Landing gear,nose gear - collapsedCause
Terrain condition - runway

Analysis

According to the instructor, the landing gear failed to fully retract after takeoff. He stated that after lift-off, and with "no more usable runway," we "retracted the landing gear, looking for a green light gear indicator." The light did not come on. He looked outside at the mirror on the left main tank and identified the "gear malfunction." They continued the local flight to burn off excess fuel and then made a precautionary landing at Provo. During the landing roll, the nose landing gear collapsed. The airplane sustained substantial damage to the left and right forward nose landing gear well former (keel beam) assemblies. The manufacturer states that the Cessna 310B, is equipped with a landing gear position light system. Two landing gear position lights are provided, one above and one below the landing gear switch. The "upper light is red, and is on at all times when the gear is retracted." The "lower light is green, and illuminates only when the landing gear is fully extended and locked." If the landing gear is not fully extended and locked, the green light will not illuminate, and if neither light is on, the landing gear is in an intermediate position.

Factual narrative

On March 19, 2002, at approximately 1355 mountain standard time, a Cessna 310B, N5381A, was substantially damaged when its nose landing gear collapsed during landing roll at Provo Municipal Airport (PVU), Provo, Utah. The airline transport instructor pilot and commercial pilot receiving instruction were not injured. Visual meteorological conditions prevailed for this local training flight being conducted under Title 14 CFR Part 91. The flight originated at approximately 1130.

According to the instructor, the landing gear failed to fully retract after takeoff. He stated that after lift-off, and with "no more usable runway," we "retracted the landing gear, looking for a green light gear indicator." The light did not come on. He looked outside at the mirror on the left main tank and identified the "gear malfunction." They continued the local flight to burn off excess fuel and then made a precautionary landing at Provo. During the landing roll, the nose landing gear collapsed. The airplane sustained substantial damage to the left and right forward nose landing gear well former (keel beam) assemblies.

According to the manufacturer, the Cessna 310B, is equipped with a landing gear position light system. Two landing gear position lights are provided, one above and one below the landing gear switch. The "upper light is red, and is on at all times when the gear is retracted." The "lower light is green, and illuminates only when the landing gear is fully extended and locked." If the landing gear is not fully extended and locked, the green light will not illuminate, and if neither light is on, the landing gear is in an intermediate position.

Aircraft

Registration
N5381A
Reported as
Cessna 310B
Category
Airplane
Serial number
35581
Airframe hours
4,538.3
Engines
Continental O-470-M, 240 horsepower, reciprocatingContinental O-470-M, 240 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Twin C Enterprises, L.L.C.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 21, 2001 · 98.8 hours before
Departed
PVU · Provo, UT
Destination
PVU · Provo, UT
Airport
PVU · Provo Municipal, runway 18, 6,937 × 150 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
50
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
October 13, 2001
Seat
Left
Flight hours
2,100 total · 50 in this make and model · 2,000 as pilot in command · 60 in the last 90 days
Role
Pilot
Age
35
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
August 24, 2001
Seat
Right
Flight hours
1,042 total · 324 in this make and model · 881 as pilot in command · 122 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 18 °F
Altimeter
30.26 inHg
Observed at
KPVU

Docket · 6

The files NTSB released with the investigation on December 10, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 MB in all.

FAA reports on this event · 1

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