LAX03LA133

NTSB accident investigation · Schweizer SGS 1-34 · San Diego, CA · March 16, 2003

Accident · No injuriesLimited investigationFinal report
Date
March 16, 2003, 14:20 local (22:20 UTC)
Place
San Diego, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N1169SSchweizer SGS 1-34
Weather
Visual (VMC) · Day
Status
Completed · report December 28, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20030316004529A
Case key
56835

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 misjudgment of the landing flare and descent rate. A contributing factor was the pilot's misjudged speed and distance.

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
Weather condition - tailwind
Distance/speed - misjudgedPilot in commandCause
Descent - misjudgedPilot in commandCause
Flare - improperPilot in commandCause

Analysis

The glider landed hard on a dirt strip, which caused damage to the fuselage, forward bulkhead, and stringers. The gliderport is a publicly owned field situated on top of a mesa along the coastline; the west boundary of the airstrip is a 400-foot sandstone cliff that drops almost vertically to the Pacific ocean. The pilot attempted to land downwind on runway 9 with a 13-knot tailwind. He noted that while turning onto the base leg, his approach was high. To counteract the lift produced by the cliff, he deployed full spoilers. Still high, the pilot put the glider into a slip configuration to lose altitude. The pilot stated that the airspeed was 48 knots. He continued to hold the full spoiler, full slip condition until he felt he had attained the appropriate altitude to make a normal landing. He neutralized the flight controls, and retained full spoiler input. The glider landed hard. The pilot stated that the combination of flying from a lift to a no lift condition, the high downwind ground speed, and the rolling terrain contributed to his misjudging the sink rate, which resulted in a hard landing. The pilot did not report any pre-impact mechanical malfunctions or failures with the glider. Winds at the time of the accident were from 230-degrees at 13 knots.

Factual narrative

On March 16, 2003, at 1420 Pacific standard time, a Schweizer SGS 1-34, N1169S, landed hard on a dirt strip at Torrey Pines Gliderport (CA84), San Diego, California. Associated Glider Clubs of Southern California, Ltd., operated the glider under the provisions of 14 CFR Part 91. The commercial glider pilot, the sole occupant, was not injured; the glider sustained substantial damage. Day visual meteorological conditions prevailed, and a flight plan had not been filed. The local area flight departed CA84 about 1330.

A routine aviation weather report (METAR) generated by an Automated Surface Observation System (ASOS) at Montgomery Field Airport, San Diego, California (located 7 nautical miles northwest of the accident site), indicated about 10 minutes prior to the accident winds were 230-degrees at 13 knots.

The Torrey Pines Gliderport is a publicly owned field. CA84 is situated on top of the Torrey Pines Mesa, along the coastline of the Pacific Ocean. The 400-foot sandstone cliffs rise almost vertically from Black's Beach.

In a written statement, the pilot reported that he departed CA84 by winch launch, into favorable meteorological conditions. After 45 minutes of uneventful flight, he decided to land. On the first pass, he decided the area was too congested with paragliders and hang-gliders, to execute a safe landing pattern. He made a second pass along the cliff in an effort to allow the traffic to clear the area. The pilot stated that he began an approach in accordance with "standard Torrey Pines procedures, heading northbound… 600 [feet] msl, 300 [feet] agl."

As traffic had cleared the area, he turned west, towards the ocean, and entered the downwind. During the turn to the base leg, he noted that the glider appeared to be "slightly high for the approach." He deployed full spoilers. He noted that the full spoilers weren't providing a sufficient amount of sink to counter the lift produced by the cliff. He then applied a full slip using full right rudder and left aileron. He checked his airspeed, 48 knots; 2 knots below best glide speed. He continued to hold a full spoiler, full slip condition until he "felt" he was on the proper glide slope. The pilot then neutralized the flight controls, and retained the full spoiler input. The glider landed hard.

The pilot stated he thought that the combination of flying from a lift to a no lift condition, the high downwind ground speed, and rolling terrain in the area, contributed to his misjudging the sink rate created by the full spoiler, full slip approach, which resulted in a hard landing. The glider incurred damage to the fuselage, forward bulkhead, and stringers. The pilot did not report any pre-impact mechanical malfunctions or failures with the glider.

Aircraft

Registration
N1169S
Reported as
Schweizer SGS 1-34
Category
Glider
Serial number
69
Airframe hours
3,466.2
Engine
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Associated Glider Clubs of SO CA Ltd
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 1, 2002 · 100 hours before
Departed
CA84 · San Diego, CA
Destination
CA84 · San Diego, CA
Airport
CA84 · Torrey Pines Gliderport, runway 09, 1,500 × 30 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
49
Injuries
None
Certificate
Commercial
Last flight review
October 23, 2002
Seat
Center
Flight hours
162 total · 6 in this make and model · 139 as pilot in command · 11 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 9 knots
Visibility
10 statute miles
Lowest ceiling
2,400 ft broken
Temperature
61 °F, dew point 50 °F
Altimeter
29.81 inHg
Observed at
SAN, 10 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.