ATL99LA115

NTSB accident investigation · Beech 55 · Nashville, TN · July 20, 1999

Accident · No injuriesLimited investigationFinal report
Date
July 20, 1999, 11:28 local (16:28 UTC)
Place
Nashville, TN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N56AWBeech 55
Weather
Visual (VMC) · Day
Status
Completed · report November 30, 2000
Report
Approved by Office Director
FAA report
19990720024069A
Case key
47013

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 total failure of the nose gear extension and retraction assembly that resulted in the collapse of the nose gear during 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/malfunctionLanding
Landing gear,nose gearCause
Landing gear,normal retraction/extension assembly - failure,totalCause
Nose gear collapsedLanding

Analysis

According to the pilot, the multi-engine training flight was cleared for a landing on runway 20C. The pilot reported that the before landing checklist was completed, and the landing gear extension was verified by both pilots. The landing on the main wheels, was described as normal, but when the nose wheel was lowered on the runway, both pilots heard a 'pop' followed by the collapse of the nose wheel assembly. The airplane slid 2500 feet before stopping on the runway. The post-accident examination of the airplane disclosed that the nose landing gear aft drag brace had broken. Maintenance history of the failed component was not available.

Factual narrative

On July 20, 1999, at 1128 central daylight time, a Beech 55, N56AW, nose wheel assembly collapsed during a landing on runway 20C at the Nashville International Airport in Nashville, Tennessee. The instructional flight was operated by the pilot under the provisions of Title 14 CFR part 91 with no flight plan filed. Visual weather conditions prevailed at the time of the accident. The airplane sustained substantial airframe damage. The certified flight instructor and the commercial pilot were not injured. The initial departure time from Nashville, Tennessee, at 0900.

According to the pilot, the multi-engine training flight was cleared for a landing on runway 20C. The pilot reported that the before landing checklist was completed, and the landing gear extension was verified by both pilots. The landing on the main wheels, was described as normal, but when the nose wheel was lowered on the runway, both pilots heard a "pop" followed by the collapse of the nose wheel assembly. The airplane slid 2500 feet before stopping on the runway.

The post-accident examination of the airplane disclosed that the nose landing gear aft drag brace had broken. The drag brace broke at the point where the retraction rod attaches to the nose gear retract idler tangs. Maintenance history of the failed component was not available, however according to the 100 hour inspection card, a visual and security check is required for nose gear linkage components (see attached copy, illustrated parts catalog, and copy, shop manual,100-hour inspection).

Aircraft

Registration
N56AW
Reported as
Beech 55
Category
Airplane
Serial number
TC-110
Airframe hours
3,500
Engine
Continental IO-470-L, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Robert M. Whitmore
Registered owner
Aircraft Support Services
Airworthiness certificate
Standard, Normal
Departed
BNA
Airport
BNA · Nashville International, runway 20C, 8,000 × 150 ft, concrete

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
50
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,500 total · 16 in this make and model · 12 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 6 knots
Visibility
10 statute miles
Lowest ceiling
250 ft broken
Temperature
84 °F, dew point 73 °F
Altimeter
29.00 inHg
Observed at
BNA

FAA reports on this event · 1

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