ANC16CA055

NTSB accident investigation · Kirbybilt Xcalibur · Valdez, AK · July 19, 2016

Accident · No injuriesData collectionFinal report
Date
July 19, 2016, 14:30 local (22:30 UTC)
Place
Valdez, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N505XCKirbybilt Xcalibur
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report September 12, 2016
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA Anchorage FSDO
FAA report
20160719012909A
Case key
93800

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 an adequate glide path during landing, which resulted in the airplane landing short of the airstrip, a landing gear collapse, and subsequent substantial damage to the fuselage.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotKirbybilt XCALIBUR: 1 caseAll aircraft: 9,295 casesProbable cause
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedKirbybilt XCALIBUR: 1 caseAll aircraft: 809 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that he made an approach to a remote grass airstrip that resulted in the tailwheel-equipped airplane being too low to make the airstrip threshold. During the touchdown, the main landing gear impacted an embankment and collapsed, and the bottom of the fuselage impacted terrain. The airplane sustained substantial damage to the fuselage. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. As a safety recommendation, the pilot reported to avoid landing at this particular area until more reconnaissance is conducted along with additional off airport operations practice. The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3A (2004). This handbook discusses a low final approach and states in part: When it is realized the runway will not be reached unless appropriate action is taken, power must be applied immediately to maintain the airspeed while the pitch attitude is raised to increase lift and stop the descent. When the proper approach path has been intercepted, the correct approach attitude should be reestablished and the power reduced and a stabilized approach maintained.

Factual narrative

The pilot reported that he made an approach to a remote grass airstrip that resulted in the tailwheel-equipped airplane being too low to make the airstrip threshold. During the touchdown, the main landing gear impacted an embankment and collapsed, and the bottom of the fuselage impacted terrain. The airplane sustained substantial damage to the fuselage. The pilot reported that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. As a safety recommendation, the pilot reported to avoid landing at this particular area until more reconnaissance is conducted along with additional off airport operations practice. The Federal Aviation Administration has published the Airplane Flying Handbook FAA-H-8083-3A (2004). This handbook discusses a low final approach and states in part: When it is realized the runway will not be reached unless appropriate action is taken, power must be applied immediately to maintain the airspeed while the pitch attitude is raised to increase lift and stop the descent. When the proper approach path has been intercepted, the correct approach attitude should be reestablished and the power reduced and a stabilized approach maintained.

Aircraft

Registration
N505XC
Reported as
Kirbybilt Xcalibur
Category
Airplane, amateur-built
Serial number
XC001
Built
2008
Airframe hours
451.7
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · June 6, 2016
Departed
VDZ · Valdez, AK
Destination
VDZ · Valdez, AK
Equipment
None

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
44
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3
Seat
Left
Restraint
4-point
Flight hours
194 total · 189 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 8 knots
Visibility
10 statute miles
Temperature
79 °F, dew point 46 °F
Altimeter
29.85 inHg
Observed at
PAVD, 11 nm away

Docket · 2

The files NTSB released with the investigation on August 30, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 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.