CHI05LA047

NTSB accident investigation · Learjet 25B · Cedar Rapids, IA · December 20, 2004

Accident · No injuriesLimited investigationFinal report
Date
December 20, 2004, 13:30 local (19:30 UTC)
Place
Cedar Rapids, IA
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N252BKLearjet 25B
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 2005
Report
Approved by Office Director
Parties
Des Moines, IA FSDO
FAA report
20041220033989A
Case key
60761

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 was not able to maintain directional control of the airplane due to the failure of the nose gear strut seal which prevented the nose wheel from centering. A factor associated with the accident was the berm that the airplane contacted.

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.

Airframe/component/system failure/malfunctionTakeoff
Hydraulic system,seal - failure,totalCause
Landing gear,steering system - inoperativeCause
Loss of control - on ground/waterLanding - flare/touchdown
Directional control - not possiblePilot in commandCause
On ground/water encounter with terrain/waterLanding - flare/touchdown
Terrain condition - bermFactor

Analysis

The airplane collided with a berm following a loss of directional control while landing. The airplane was on a 14 CFR Part 91 positioning flight at the time of the accident. The pilots reported that they encountered what they thought were rough spots on the runway during the takeoff roll. The captain reported that after takeoff, he called for the co-pilot to raise the gear and engage the yaw damper. The crew then noticed an unsafe gear indication for the nose gear. The captain stated they leveled off at 5,000 feet and decreased the airspeed so they could recycled the landing gear. Cycling the landing gear did not resolve the problem. The crew then requested to return to the departure airport for landing. The landing gear was extended and a gear down and locked indication for all three landing gear was observed. The captain stated that on touchdown, the co-pilot extended the spoilers and armed the thrust reversers. He stated that after the nose wheel touched down the airplane made a sharp left turn and traveled off the side of the runway through the grass. The airplane contacted a four-foot high berm prior to coming to a stop on another runway. The captain stated he attempted to taxi the airplane only to discover that they did not have any nose wheel steering. Post accident inspection revealed the seal on the nose gear strut had failed which prevented the nose gear from centering.

Factual narrative

On December 20, 2004, at 1330 central standard time, a Learjet 25B, N252BK, operated by Barkin International Aviation, collided with a berm following a loss of directional control while landing on runway 13 (6,200 feet by 150 feet, dry asphalt) at the Eastern Iowa Airport (CID), Cedar Rapids, Iowa. The airline transport rated captain, commercial rated co-pilot, and two medical crew members were not injured. The 14 CFR Part 91 positioning flight was being conducted in visual meteorological conditions with an instrument flight rules flight plan on file. The flight originated from CID with an intended destination of McAllen, Texas.

Both pilots reported that they encountered what they thought were rough spots on the runway during the takeoff roll. The captain reported that after takeoff, he called for the co-pilot to raise the gear and engage the yaw damper. He stated he then called for the flaps to be retracted and for the climb checklist. He stated that both he and the co-pilot then noticed an unsafe gear indication for the nose gear. The captain stated they leveled off at 5,000 feet and he decreased the airspeed so that the co-pilot could recycled the landing gear. They informed the tower that they had a problem with the gear and that they wanted to stay in the area. The co-pilot cycled the landing gear four more times to no avail.

The captain stated they then requested a landing back at CID. He stated they had a gear down and locked indication for all three landing gear during the visual approach to runway 13. The captain stated that on touchdown, the co-pilot extended the spoilers and armed the thrust reversers. He stated that after the nose wheel touched down the airplane made a sharp left turn and traveled off the side of the runway through the grass. The airplane contacted a four-foot high berm prior to coming to a stop on runway 09. The captain stated he attempted to taxi the airplane only to discover that they did not have any nose wheel steering.

Post accident inspection revealed the seal on the nose gear strut had failed which prevented the nose gear from centering.

Aircraft

Registration
N252BK
Reported as
Learjet 25B
Category
Airplane
Serial number
107
Airframe hours
11,970
Engine
General Electric CJ610-6, 2,950 lbs thrust, turbo jet
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Goldstar International, Inc.
Registered owner
Barken International Inc
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · June 19, 2004 · 186 hours before
Departed
CID · Cedar Rapids, IA
Destination
MFE · McAllen, TX
Flight plan
IFR
Airport
CID · Eastern Iowa Airport, runway 13, 6,200 × 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
Pilot
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
June 1, 2004
Seat
Left
Flight hours
6,225 total · 350 in this make and model · 5,233 as pilot in command · 91 in the last 90 days · 25 in the last 30 days · 0 in the last 24 hours
Role
Co-pilot
Age
26
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
April 1, 2004
Seat
Rear
Flight hours
1,107 total · 5 in this make and model · 940 as pilot in command · 25 in the last 90 days · 5 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 14 knots, gusting 23
Visibility
10 statute miles
Lowest ceiling
None
Temperature
27 °F, dew point 9 °F
Altimeter
29.54 inHg
Observed at
CID

FAA reports on this event · 1

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