DEN01IA108

NTSB incident investigation · Beech 200 · Greeley, CO · May 8, 2001

Incident · No injuriesIncident investigationFinal report
Date
May 8, 2001, 12:56 local (18:56 UTC)
Place
Greeley, CO
Injuries
6 uninjured
Damage
Minor damage
Phase of flight
Initial climb
Aircraft
N725MCBeech 200
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 2001
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20010508009509I
Case key
52391

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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Probable cause

jamming of the nose landing gear actuator due to improper painting procedures by other maintenance personnel which resulted in a wheels up 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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Landing gear,nose gear assembly - jammedCause
Maintenance - improperOther maintenance personnelCause
Wheels up landingLanding
Wheels up landing - intentionalPilot in command

Analysis

After takeoff and during climb out, the pilot heard an unusual noise, "like a chain popping or slipping around a sprocket" when the landing gear was retracted. He then noticed the left main tire and inboard gear doors were visible beneath the engine nacelle. Unable to extend or retract the landing gear, the pilot diverted to another airport and made an intentional wheels up landing. Later disassembly and examination of the nose landing gear actuator (p/n 50-820208-5) revealed the nut assembly had been painted white while it was in the EXTEND position. After cleaning off the paint and reassembling the actuator, it moved freely in and out as required. The disassembly report stated, "The nut assembly is a chromed metal shaft that is not to be painted." According to the operator, the airplane had recently been repainted.

Factual narrative

On May 8, 2001, at 1256 mountain daylight time, a Beech 200, N725MC, operated by Mountain Aviation, Inc., sustained minor damage during an intentional wheels up landing at Greeley-Weld County Airport, Greeley, Colorado. The pilot and 5 passengers were not injured. Visual meteorological conditions prevailed, and an IFR flight plan had been filed for the non-scheduled domestic passenger flight being conducted under Title 14 CFR Part 135. The flight originated in Broomfield, Colorado, approximately 0805.

After takeoff and during climb-out, the pilot heard an unusual noise "like a chain popping or slipping around a sprocket" when the landing gear was retracted. He then noticed the left main tire and inboard gear doors were visible beneath the engine nacelle. He attempted to extend the landing gear manually but without success. The pilot circled the area to burn off fuel, then diverted to Greeley-Weld County Airport, where he performed a wheels up landing. Damage was confined to the landing gear doors, antennae, and one propeller tip.

The airplane was later hoisted by crane and the nose landing gear actuator was disconnected. The main landing gear was then cranked down, the gears were pinned, and the airplane towed to Beegles Aircraft Service. The nose landing gear actuator was then packaged, sealed, and shipped to FAA's Aircraft Certification Office in Wichita, Kansas. On May 22, 2001, the landing gear actuator (p/n 50-820208-5) was examined at Raytheon Aircraft Corporation under the auspices of the Federal Aviation Administration. In its report, Raytheon noted that the nut assembly would rotate but would not move in and out. After x-rays were taken, the nut assembly was forced out of the cylinder. It was discovered that the nut assembly had been painted white while in the EXTEND position. After cleaning off the paint and reassembling the actuator, it moved freely in and out as required. The report stated, "The nut assembly is a chromed metal shaft that is not to be painted."

According to Mountain Aviation's director of maintenance, the airplane had recently undergone a complete refurbishment, including new engines and propellers and upholstery. It was then painted by a company in Cheyenne, Wyoming.

Aircraft

Registration
N725MC
Reported as
Beech 200
Category
Airplane
Serial number
BB169
Airframe hours
8,050
Engines
P&W PT6A-41, 850 horsepower, turbo propP&W PT6A-41, 850 horsepower, turbo prop
Damage
Minor damage
Flight
Part 135
Operator
Mountain Aviation, Inc.
Registered owner
725mc, LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · January 15, 2001 · 82 hours before
Departed
BJC · Broomfield, CO
Destination
LAM · Los Alamos
Flight plan
IFR
Airport
GXY · Greeley-Weld County, runway 090, 6,200 × 100 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
31
Injuries
None
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
2,478 total · 28 in this make and model · 2,059 as pilot in command · 65 in the last 90 days · 22 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 30 °F
Altimeter
30.26 inHg
Observed at
GXY

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 N725MC · 1

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