LAX05CA111

NTSB accident investigation · Cessna 172A · Emigrant Gap, CA · March 11, 2005

Accident · No injuriesData collectionFinal report
Date
March 11, 2005, 12:15 local (20:15 UTC)
Place
Emigrant Gap, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4682GCessna 172A
Weather
Visual (VMC) · Day
Status
Completed · report June 8, 2005
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20050311003219A
Case key
61145

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 pilot's inadequate preflight planning and his selection of an unsuitable landing area, resulting in an encounter with a snow-covered runway.

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.

On ground/water encounter with terrain/waterLanding
Terrain condition - snow covered
Preflight planning/preparation - inadequatePilot in commandCause
Touch-and-go - attemptedPilot in command
Nose overLanding

Analysis

The airplane nosed over during a touch-and-go landing on a snow covered runway. The vertical stabilizer and rudder were bent when the airplane came to rest inverted. Upon arrival in the airport vicinity, the pilot flew over the airport three times. He noted that one end of the runway was visible and that the remaining 3/4 of the runway was covered in snow. Visually, the snow did not appear to be of any great depth. Based on the reported winds, the pilot decided to perform a touch-and-go on the snow-covered portion of the runway. As the airplane touched down, the landing gear entered the snow and the airplane nosed-over. The pilot noted no preimpact mechanical anomalies with the airplane. The Airport Facility Directory Southwest (AFD/SW) contains the following entry, in part, for the accident airport: "CLOSED winters due to snow." The pilot reported that he reviewed the AFD/SW, but did not read the "Remarks" section.

Factual narrative

On March 11, 2005, at 1215 Pacific standard time, a Cessna 172A, N4682G, nosed over and came to rest inverted on a snow covered runway at Blue Canyon-Nyack Airport, Emigrant Gap, California. West Valley Flying Club was operating the privately owned airplane under the provisions of 14 CFR Part 91. The private pilot, the sole occupant, was not injured; the airplane sustained substantial damage. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot departed from San Carlos Airport, San Carlos, California, at 1047 for the personal cross-country flight.

According to the pilot, he planned a flight from San Carlos to Emigrant Gap using an electronic flight planner. At 0815, on the morning of the accident, the pilot checked DUATS and then called Rancho Murrieta Flight Service Station (FSS) and requested a standard weather briefing. The pilot departed and while en route to his destination, called Flight Watch to file a pilot report (PIREP) and to receive an additional weather briefing. Upon arriving in the airport vicinity, the pilot circled the airport three times. He noted that the runway 33 numbers were visible and that the remaining 3/4 of the runway was covered in snow. Visually, the snow did not appear to be of any great depth. Based on the reported winds, the pilot decided to perform a touch-and-go takeoff and landing on runway 15. As the airplane touched down, the landing gear entered the snow and the airplane nosed over. The airplane came to rest inverted in the snow; the vertical stablizer and rudder were bent. The pilot did not report any mechanical malfunctions with the airplane prior to the accident.

The Airport Facility Directory Southwest (AFD/SW) contains the following entry, in part, for Emigrant Gap, California: "CLOSED winters due to snow."

In a telephone conversation, the pilot reported that he reviewed the AFD/SW but did not read the "Remarks" section of the Emigrant Gap entry.

Aircraft

Registration
N4682G
Reported as
Cessna 172A
Category
Airplane
Serial number
17273308
Engine
Lycoming O-320-H2AD, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
West Valley Flying Club
Registered owner
Micro Publishing Press, Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Departed
KSQL · San Carlos, CA
Destination
BLU · Emigrant Gap, CA
Airport
KBLU · Blue Canyon - Nyack Airport, runway 15, 3,300 × 50 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
46
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Flight hours
218 total · 30 in this make and model · 10 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 37 °F
Altimeter
30.23 inHg
Observed at
BLU

FAA reports on this event · 1

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