FTW02LA189

NTSB accident investigation · Beech BE-58 · Farmington, NM · June 23, 2002

Accident · No injuriesLimited investigationFinal report
Date
June 23, 2002, 12:15 local (18:15 UTC)
Place
Farmington, NM
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N8245HBeech BE-58
Weather
Visual (VMC) · Day
Status
Completed · report March 30, 2004
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020623012709A
Case key
55046

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 failure of the nose landing gear plunger assembly due to fatigue.

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 - failureCause
Landing gear,nose gear assembly - fatigueCause
Nose gear collapsedLanding - roll

Analysis

During the takeoff/initial climb, when the main landing gear retracted a "pop-bang was heard." The two green main landing gear indicator lights and the red in-transit indicator light remained illuminated. The pilot's recycled the landing gear; however, they could not get a down and locked indication for the nose landing gear. During a low approach over the runway, company personnel observed that the nose landing gear was not locked in the down position and was at a 45 degree angle. Subsequently, the nose landing gear collapsed during the landing roll. The nose landing gear plunger assembly, part number 35-825094-4, had accumulated 10,872.5 hours. Stereoscopic and metallurgical examination of the component revealed a fatigue fracture.

Factual narrative

On June 23, 2002, at 1215 mountain daylight time, a Beech BE-58, twin-engine airplane, N8245H, was substantially damaged following the collapse of the nose landing gear during the landing roll at the Four Corners Regional Airport (FMN), near Farmington, New Mexico. The airplane was owned and operated by San Juan Pilot Training, Inc., dba Mesa Airlines Pilot Development, at Farmington, New Mexico, under Code of Federal Regulations Part 91. The flight instructor and the private pilot/multiengine student were not injured. Visual meteorological conditions prevailed for the instructional flight, for which a company visual flight rules (VFR) flight plan was filed. The local flight departed Farmington at 1100.

On the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) the flight instructor reported that when the main landing gear retracted a "pop-bang was heard." The two green main landing gear indicator lights and the red in-transit indicator light remained illuminated. The pilot's recycled the landing gear; however, they could not get a down and locked indication for the nose landing gear.

The pilots established radio communication with the company dispatcher who notified the chief pilot. During a low approach over the active runway, the chief pilot and mechanics observed the nose landing gear was not locked in the down position and was at a 45 degree angle. Subsequently, the nose landing gear collapsed during the landing roll on runway 23 at FMN.

The FAA inspector, who responded to the accident site, reported the failure of the plunger assembly for the nose landing gear. Substantial damage was found at the cabin bulkhead.

The operator reported that the nose landing gear plunger assembly, part number 35-825094-4, had accumulated 10,872.5 hours. The nose landing gear plunger assembly was forwarded to the NTSB for examination.

The NTSB Investigator-in-Charge (IIC) examined the nose landing gear plunger assembly utilizing the stereoscopic microscope. The nose landing gear plunger assembly was forwarded to Raytheon Aircraft Company, Wichita, Kansas, for metallurgical examination. Metallurgical examinations revealed a fatigue fracture.

Aircraft

Registration
N8245H
Reported as
Beech BE-58
Category
Airplane
Serial number
TH-1635
Airframe hours
10,872.5
Engine
Continental IO-550-C, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
San Juan Pilot Training, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · June 21, 2002 · 4.6 hours before
Departed
FMN · Farmington, NM
Destination
FMN · Farmington, NM
Flight plan
Company VFR
Airport
FMN · Four Corners Regional, runway 23, 6,500 × 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
Flight instructor
Age
34
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
August 17, 2001
Seat
Right
Flight hours
2,945 total · 150 in this make and model · 2,855 as pilot in command · 270 in the last 90 days · 105 in the last 30 days · 4 in the last 24 hours
Role
Pilot
Age
39
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Last flight review
April 22, 2002
Seat
Left
Flight hours
296 total · 19 in this make and model · 180 as pilot in command · 36 in the last 90 days · 16 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 34 °F
Altimeter
30.19 inHg
Observed at
FMN

Docket · 5

The files NTSB released with the investigation on January 30, 2004, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.2 MB in all.

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 N8245H · 1

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