NYC04LA062

NTSB accident investigation · Gates Learjet 35A · Akron, OH · January 30, 2004

Accident · No injuriesLimited investigationFinal report
Date
January 30, 2004, 12:35 local (17:35 UTC)
Place
Akron, OH
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N39WAGates Learjet 35A
Weather
Visual (VMC) · Day
Status
Completed · report January 24, 2005
Report
Approved by Office Director
Parties
FAA Cleveland FSDO
FAA report
20040130003519A
Case key
58694

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

An improperly maintained ramp area, which resulted in a loss of airplane control while taxiing on ice. Factors in this accident were, high winds, and the down-sloping ramp.

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 - on ground/waterTaxi
Airport facilities,ramp facilities - not maintainedCause
Terrain condition - icyCause
Terrain condition - downhillFactor
Weather condition - high windFactor
On ground/water collision with objectTaxi
Object - wall/barricade

Analysis

After landing, the pilot taxied from the runway to the ramp area. After making a turn onto the ramp, the airplane began to slide on top of an ice layer. The brakes were ineffective and the co-pilot shut down the engines; however, due to the downward slope of the ramp area and the wind conditions, the airplane continued to accelerate. The airplane struck a concrete retaining wall, before it came to rest. Examination of the ramp area revealed that it was covered with a 1-inch thick layer of smooth clear ice. The operator of the ramp said that other airplanes had taxied into and out of the ramp without problem prior to, and after the accident. However, sand had been applied to the ramp for the other aircraft, but not the accident airplane. In addition, the winds were lighter at the time the other aircraft were taxiing. The weather at the time of the accident included: wind from 270 degrees at 15 knots, and a temperature of 11 degrees F.

Factual narrative

On January 30, 2004, about 1235 eastern standard time, a Gates Learjet 35A, N39WA, was substantially damaged while taxiing, after landing at the Akron-Canton Regional Airport (CAK), Akron Ohio. The certificated airline transport pilot and certificated commercial co-pilot were not injured. Visual meteorological conditions prevailed and an instrument flight rules flight plan had been filed for the flight that originated at the Toledo Express Airport, Toledo, Ohio. The positioning flight was conducted under 14 CFR Part 91.

According to the pilot, the taxi from the runway to the ramp area was normal. After making a right 90 degree turn onto the ramp from taxiway "E", the airplane began to slide on top of an ice layer. The brakes were ineffective and the co-pilot shut down the engines; however, due to the downward slope of the ramp area and the wind conditions, the airplane continued to accelerate. The airplane then struck a concrete retaining wall, before it came to rest.

A Federal Aviation Administration (FAA) inspector who examined taxiway "E", and the ramp area about 90 minutes after the accident, noted that conditions on taxiway "E" were 85% dry and sanded; however, the ramp area was covered with a 1-inch thick layer of smooth clear ice.

Examination of the airplane by the same FAA inspector revealed that the airplane's nose landing gear had separated, the left main landing gear collapsed, and the left main gear actuator separated from the spar and had punctured through the keel beam. In addition, the inspector observed a fuel, and a hydraulic fluid leak.

The owner of the fixed base operation (FBO) located on the ramp, said that other airplanes had taxied into and out of the ramp without problem prior to, and after the accident. The owner further stated that sand had been applied to the ramp for the other aircraft, but not the accident airplane. In addition, the winds were lighter at the time the other aircraft were taxiing.

The reported weather at CAK, at 1239, was: wind from 270 degrees at 15 knots; visibility 9 miles in light snow; few clouds at 1900 feet; scattered at 2700 feet; ceiling overcast at 3400 feet; temperature 11 degrees F; dew point 1 degree F; altimeter 29.84 inches/Hg.

Aircraft

Registration
N39WA
Reported as
Gates Learjet 35A
Category
Airplane
Serial number
092
Airframe hours
18,552.9
Engines
Garrett TFE-731-2-2B, 3,500 lbs thrust, turbo jetGarrett TFE-731-2-2B, 3,500 lbs thrust, turbo jet
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Tri-Coastal Air
Registered owner
Snowflakes LLC.
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · October 21, 2003 · 34.7 hours before
Departed
TOL · Toledo, OH
Destination
CAK · Akron, OH
Flight plan
IFR
Airport
CAK · Akron-Canton Regional

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
44
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
4,600 total · 2,455 in this make and model · 3,200 as pilot in command
Role
Co-pilot
Age
35
Injuries
None
Certificates
Commercial, Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
3,064 total · 2,267 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots
Visibility
9 statute miles
Lowest ceiling
3,400 ft overcast
Temperature
10 °F, dew point 1 °F
Altimeter
29.84 inHg
Observed at
CAK

FAA reports on this event · 1

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