NYC98LA055

NTSB accident investigation · Cessna 172 · Mansfield, MA · December 28, 1997

Accident · Serious injuriesLimited investigationFinal report
Date
December 28, 1997, 08:30 local (13:30 UTC)
Place
Mansfield, MA
Injuries
1 serious, 1 minor, 1 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N9604HCessna 172
Weather
Visual (VMC) · Day
Status
Completed · report December 7, 1999
Report
Approved by Office Director
FAA report
19971228039489A
Case key
39524

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 pilot's failure to remove snow and ice from the aircraft prior to takeoff resulting in degraded climb performance and a subsequent stall/mush condition.

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.

Loss of control - in flightTakeoff - initial climb
Ice/frost removal from aircraft - not performedPilot in commandCause
Aircraft performance - deteriorated
Stall/mush
In flight collision with objectDescent - uncontrolled
Object - pole
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The airplane was observed to takeoff from runway 32 and climb to about 300 feet above the ground. It was then observed to turn to the left, in a nose down attitude, and disappear behind trees after which it collided with a pole and terrain coming to rest upright in a cleared area. Examination of the wreckage revealed an approximate half-inch coating of ice covering the top of the wings. Both horizontal stabilizers exhibited thin patchy areas of ice along their entire surfaces. Thin patches of ice were also found on the fuselage center section, and the leading edge of the right wing strut. Post-crash examination of the aircraft revealed no evidence of pre-impact mechanical malfunction. Precipitation at the airport between 1445 and 2045 on the day before the accident, was reported as mist, light rain, light rain and snow showers, and ending with light snow. The night before, and the day of the accident, the temperatures were below freezing.

Factual narrative

On December 28, 1997, about 0830 Eastern Standard Time, a Cessna 172, N9604H, was destroyed when it collided with a pole during the initial climb from the Mansfield Municipal Airport, Mansfield, Massachusetts. The certificated commercial pilot was seriously injured, one passenger received minor injuries, and a second passenger was not injured. Visual meteorological conditions prevailed for the flight destined for West Palm Beach, Florida. No flight plan was filed for the personal flight conducted under 14 CFR Part 91.

Airport personnel reported that a notice to airman (NOTAM) was issued that the airport was closed for the purpose of removing snow and ice from the taxiways and runway. Prior to departure, the pilot was advised by airport personnel that the airport was closed to facilitate the removal of snow and ice on the runway. The airplane was then observed performing a high speed taxi down the runway with snow and ice covering the airframe. Airport personnel also stated that the pilot's microphone was stuck during the high speed taxi, and heard the pilot stating to his passengers that he was testing the runway, and that it was icy. The airplane was then observed to depart Runway 32, a 3,498 foot long, 75 foot wide, asphalt runway, covered with snow and ice. As the airplane climbed to about 300 feet above the ground, it turned to the left, in a nose down attitude, and disappeared behind trees.

The airplane collided with a pole, and impacted the ground coming to rest upright in a cleared area.

A Mansfield, Massachusetts Police Department officer was dispatched to the accident scene. In a written statement, the officer observed that both wings were bent, and covered with snow and ice. He also observed the propeller blades were bent backwards.

The wreckage, which was stored in a locked unheated hangar, was examined December 29th by a Cessna Aircraft Company, Air Safety Investigator, under the supervision of a Federal Aviation Administration (FAA) Inspector. During the examination, about 1/2 inch coating of ice was observed covering the top of the wings. Both horizontal stabilizers exhibited thin patchy areas of ice along the entire surface. Thin patches of ice were also found on the fuselage center section, and the leading edge of the right wing strut. Fuel was observed in the fuel tanks, gascolator, and fuel filter with no evidence of ice. The FAA inspector had to scrape ice from the wings to open the fuel caps. During the examination there was no evidence of pre-impact mechanical malfunctions with the airplane.

The weather at the time of the accident was reported as winds from 360 degrees at 6 knots; visibility 10 miles; a scattered layer of clouds at 15,000 feet; temperature 27 degrees Fahrenheit; and altimeter 29.74 inches of Mercury. The afternoon and night prior to the accident, precipitation at the airport between 1445 and 2045, was reported as mist, light rain, light rain and snow showers, and ending with light snow. The night before, and the day of the accident, the temperatures were below freezing.

Aircraft

Registration
N9604H
Reported as
Cessna 172
Category
Airplane
Serial number
17266258
Engine
Lycoming O320-E2D, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Kevin Vance
Airworthiness certificate
Standard, Normal
Departed
1B9
Destination
BDR · Bridgeport, CT
Airport
1B9 · Mansfield Muni Airport, runway 32, 3,498 × 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
41
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Unknown
Seat
Left
Flight hours
1,000 total · 1,000 as pilot in command · 30 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
27 °F
Altimeter
29.00 inHg
Observed at
OWD, 11 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 N9604H · 1

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