FTW99LA203

NTSB accident investigation · Beech C23 · Tulsa, OK · July 23, 1999

Accident · No injuriesLimited investigationFinal report
Date
July 23, 1999, 16:00 local (21:00 UTC)
Place
Tulsa, OK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6712WBeech C23
Weather
Visual (VMC) · Day
Status
Completed · report June 22, 2000
Report
Approved by Office Director
FAA report
19990723009659A
Case key
46929

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's failure to maintain the proper descent rate, which resulted in a hard 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.

Hard landingLanding - flare/touchdown
Proper descent rate - not maintainedPilot in commandCause

Analysis

During final landing approach the airplane touched down hard resulting in substantial damage. The pilot was demonstrating a power off landing. During the landing flare, he noticed that his 'aiming point' was 'moving in the wrong direction.' He 'immediately tried to add power and as [he] was doing this [he] arrived at the ground - 3 pointed the aircraft, which resulted in damage.' The pilot stated that the runway had 'a large drop from about 50 percent of the length to the north.' He further stated that he thought 'the gradual loss of headwind when [he] descended below the crest of the runway, and the resultant loss of translational lift, allowed an increase in descent rate that went undetected until the flare.'

Factual narrative

On July 23, 1999, at 1600 central daylight time, a Beech C23 airplane, N6712W, was substantially damaged during a hard landing at the Tulsa International Airport, Tulsa, Oklahoma. The airline transport rated pilot and his pilot-rated passenger were not injured. The airplane was registered to Tulsair Beechcraft Inc. of Tulsa and operated by the pilot. No flight plan was filed and visual meteorological conditions prevailed for the 14 Code of Federal Regulations Part 91 personal cross-country flight, which originated from Wichita, Kansas, approximately 1500.

According to the pilot, he was demonstrating a "power off landing when out of normal approach position." On final approach to runway 18R, "all appeared normal." The "airspeed was 60 kts," and the rate of descent was "approximately 500 feet/min." During the landing flare, the pilot noticed that his "aiming point" was "moving in the wrong direction." He "immediately tried to add power and as [he] was doing this [he] arrived at the ground - 3 pointed the aircraft, which resulted in damage."

The pilot stated that runway 18R "has a large drop from about 50 percent of the length to the north." He further stated that he thought "the gradual loss of headwind when [he] descended below the crest of the runway, and the resultant loss of translational lift, allowed an increase in descent rate that went undetected until the flare."

An FAA inspector examined the airplane and reported that the right main and nose landing gear assemblies were separated, the firewall was buckled, and the left wing's forward spar was damaged.

Aircraft

Registration
N6712W
Reported as
Beech C23
Category
Airplane
Serial number
M-2251
Airframe hours
2,401
Engine
Lycoming O-360-A4R, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
David L. Williams
Registered owner
Tulsair Beechcraft Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 30, 1998 · 47 hours before
Departed
BEC · Wichita, KS
Destination
TUL
Airport
TUL · Tulsa International, runway 18R, 6,101 × 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
13,400 total · 8 in this make and model · 11,600 as pilot in command · 195 in the last 90 days · 73 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
95 °F

FAA reports on this event · 1

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