MIA01LA044

NTSB accident investigation · Aero Vodochody Aero. Works L-39C · Hilton Head Isl, SC · December 16, 2000

Accident · No injuriesLimited investigationFinal report
Date
December 16, 2000, 14:50 local (19:50 UTC)
Place
Hilton Head Isl, SC
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N139CGAero Vodochody Aero. Works L-39C
Weather
Visual (VMC) · Day
Status
Completed · report April 19, 2001
Report
Approved by Office Director
FAA report
20001216024679A
Case key
51248

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 pilot's improper inflight planning/decision and failure to follow the prelanding checklist, resulting in the landing gear not being lowered in sufficient time to be verified down and locked, which resulted in a wheels up landing and substantial damage to the airplane.

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.

Wheels up landingLanding
In-flight planning/decision - improperPilot in commandCause
Checklist - not followedPilot in commandCause
Gear extension - delayedPilot in commandCause
Gear down and locked - not verifiedPilot in commandCause

Analysis

The pilot stated that he had been flying for about 20 minutes and became concerned that fog may be moving into the airport area so he returned for a landing. During landing the pilot said he did not extend the landing gear on the downwind leg as he normally did, and he realized he had not done so late, just prior to landing. He said the landing gear touched the runway before it was fully extended and locked. According to the pilot the landing gear collapsed, and the aircraft slid on its belly to a stop on the runway, incurring substantial damage. The pilot said that no mechanical malfunctions existed with either the aircraft, or its systems prior to the accident.

Factual narrative

On December 16, 2000, about 1450 eastern standard time, an Aero Vodochody L39C, N139CG, registered to Glastonbury Aviation LLC, and operated as a Title 14 CFR Part 91 personal flight, had its landing gear collapse during landing at Hilton Head Airport, Hilton Head, South Carolina. Visual meteorological conditions prevailed, and no flight plan was filed. The aircraft incurred substantial damage, and the commercial-rated pilot, the sole occupant of the aircraft was not injured. The flight originated the same day, about 1420.

The pilot stated that he had been flying for about 20 minutes east of the Hilton Head Airport, over the ocean, when he became concerned that fog may be moving into the airport area, so he returned for a landing. The pilot further stated that during the landing preparations he did not extend the landing gear on the downwind leg as he normally did, and he realized he had not done so late, just prior to landing. He said the landing gear touched the runway before it was fully extended and locked. According to the pilot, the landing gear collapsed, and the aircraft slid to a stop on the runway, incurring substantial damage. The pilot said that no mechanical malfunctions existed with either the aircraft, or its systems prior to the accident.

Aircraft

Registration
N139CG
Reported as
Aero Vodochody Aero. Works L-39C (L39C)
Category
Airplane
Serial number
332748
Engine
AI-25-TL, 23,800 lbs thrust, turbo jet
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Christos I. Grigoriou
Airworthiness certificate
Special, Experimental (Special)
Departed
HXD
Airport
HXD · Hiilton Head, runway 21, 4,300 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
61
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
4,108 total · 125 in this make and model · 4,050 as pilot in command · 33 in the last 90 days · 9 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 66 °F
Altimeter
30.00 inHg
Observed at
SAV, 30 nm away

FAA reports on this event · 1

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