CHI98LA268

NTSB accident investigation · Schweizer SGS 2-33A · Indianapolis, IN · July 12, 1998

Accident · No injuriesLimited investigationFinal report
Date
July 12, 1998, 11:00 local (16:00 UTC)
Place
Indianapolis, IN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N17901Schweizer SGS 2-33A
Weather
Visual (VMC) · Day
Status
Completed · report February 15, 2001
Report
Approved by Office Director
FAA report
19980712037699A
Case key
43098

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 delayed in-flight decision of the pilot in command to take control of the aircraft and the proper airspeed not obtained/maintained by the pilot in command which resulted in a stall. A factor to the accident was the runway light.

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
Airspeed - not obtained/maintainedPilot in command(cfi)Cause
StallPilot in command(cfi)Cause
In-flight planning/decision - delayedPilot in command(cfi)Cause
On ground/water collision with objectLanding - roll
Object - runway lightFactor

Analysis

The instructor stated that when they turned base to final they were approximately 250' above ground level (agl). The CFI told the student to use 'Full' spoilers to bring the aircraft back on a normal glide path to the runway. The CFI stated that at approximately 100' agl the student had 'Full' spoilers deployed and had an excessive nose down attitude. The CFI told the student 'Close' the spoilers and bring the nose up to reduce the excessive airspeed. The CFI stated that the student began to bring the nose up, without closing the spoilers, and that he took control of the aircraft at this point. The CFI closed the spoilers completely but the aircraft was already entering a stall. The CFI stated that he reduced the angle of attack in order to regain airspeed and then flared close to the ground. The CFI stated that the aircraft 'Pancaked-in, a landing hard enough to throw me into the shoulder straps and my head down so that briefly I could not see outside.' The aircraft drifted to right side of the runway and the right wing impacted a runway light before coming to a stop.

Factual narrative

On July 12, 1998, at 1100 eastern standard time (edt), a Schweizer SGS 2-33A, N17901, piloted by a Certified Flight Instructor (CFI), sustained substantial damage when it collided with a taxiway light during landing roll on runway 18 (5000' x. 100', concrete, dry) at Indianapolis Terry Airport, near Indianapolis, Indiana. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 instructional flight was not operating on a flight plan. The CFI and student reported no injuries. The local flight departed Indianapolis Terry Airport at 1055 edt.

According to the pilot-in-command's written statement, he was giving dual instruction to a student pilot at the time of the accident. The CFI stated that when they were maneuvering the aircraft to enter the traffic pattern for the grass area, which parallels runway 18, he noticed that another glider was also entering the same traffic pattern. The student pilot initiated a radio transmission to the pattern traffic that they intended to execute a left pattern for the grass landing area. The CFI also made a transmission to the other glider that they were directly behind them. The CFI stated that there was no response. The CFI decided to alter their traffic pattern to land on runway 18, due to the other traffic that was ahead of their glider.

The CFI stated that when they turned base to final they were approximately 250' above ground level (agl). The CFI told the student to use "Full" spoilers to bring the aircraft back on a normal glide path to the runway. The CFI stated that at approximately 100' agl the student had "Full" spoilers deployed and had an excessive nose down attitude. The CFI told the student "Close" the spoilers and bring the nose up to reduce the excessive airspeed. The CFI stated that the student began to bring the nose up, without closing the spoilers, and that he took control of the aircraft at this point. The CFI closed the spoilers completely but the aircraft was already entering a stall. The CFI stated that he reduced the angle of attack in order to regain airspeed and then flared close to the ground. The CFI stated that the aircraft "Pancaked-in, a landing hard enough to throw me into the shoulder straps and my head down so that briefly I could not see outside." The aircraft drifted to right side of the runway and the right wing impacted a runway light before coming to a stop.

In the written statement by the pilot in command, the CFI stated, "My errors were not taking control earlier and not announcing to the student that I had done so when I grabbed the controls."

Aircraft

Registration
N17901
Reported as
Schweizer SGS 2-33A
Category
Glider
Serial number
291
Airframe hours
3,718
Engine
unknown
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Central Indiana Soaring Societ
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 3, 1998 · 28 hours before
Departed
I52
Airport
TYQ · Indianapolis Terry Airpor, runway 18, 5,000 × 100 ft, concrete

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
67
Certificates
Private, Commercial
Airplane ratings
Single-engine land
Medical
Unknown, Unknown
Seat
Rear
Flight hours
489 total · 100 in this make and model · 227 as pilot in command · 19 in the last 90 days · 6 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 48 °F
Altimeter
30.00 inHg
Observed at
IND, 19 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.