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NYC88LA159 · Schweizer SGS-2-33

5 Jun 1988 · ERWINNA, PA, United States

Country Aviation Schweizer SGS-2-33 · Accident: hard landing

From Van Sant Airport (9N1) to Van Sant Airport (9N1)

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Event

NTSB case
NYC88LA159
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Schweizer SGS-2-33

Aircraft type
Schweizer SGS-2
Category
Glider
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N1240S
Onboard fatalities
Unknown
Route
From Van Sant Airport (9N1)To Van Sant Airport (9N1)
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
Landing · flare/touchdown
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Hard landing
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Directional control › Not maintained
  • Dual student › Recovery from bounced landing, improper
  • Pilot in command(cfi) › Supervision, inadequate

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

THE INSTRUCTOR PILOT (CFI) RPRTD THAT WHEN HE & THE PRIVATE PLT WERE LANDING, FULL SPOILERS WERE USED. SUBSEQUENTLY, THE GLIDER SETTLED VERY RAPIDLY, TOUCHED DOWN HARD, BOUNCED, AND THE RIGHT WING DROPPED. THE GLIDER THEN TURNED ABOUT 70 DEG TO THE RIGHT, WENT DOWN AN INCLINE & HIT TREES. THE CFI RPRTD THE WIND WAS FROM 300 DEG AT 18 GUSTING 26 KTS.

Probable cause

ACCIDENT WAS A LOSS OF DIRECTIONAL CONTROL DURING LANDING WHICH FOLLOWED A HARD LANDING. CONTRIBUTING WAS THE IMPROPER USE OF SPOILER CONTROL BY THE PRIVATE PILOT AND THE FAILURE OF THE FLIGHT INSTRUCTOR TO ADEQUATELY SUPERVISE THE ACTIONS OF THE PRIVATE PILOT.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record NYC88LA159
Event ID
20001213X26060
Case number
NYC88LA159
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: de781e10db0fee18dd24734bd3cc6c984403b85735afe63a0856490917e37860; retrieved 2026-09-23T10:05:39.060Z.