# NTSB NYC84LA112: Beech 76, N6697L, Pittsburgh, PA, March 17, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 17, 1984, 13:32 local (18:32 UTC)
- Place: Pittsburgh, PA
- Coordinates: 40.359004, -79.900367 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.3590&lon=-79.9004&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35516
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84LA112
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35516/pdf
- Page: https://openairdocs.org/ntsb/NYC84LA112

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, takeoff - initial climb
  - touch-and-go - initiated, dual student
  - raising of flaps - not performed, dual student (contributing factor)
  - lift-off - initiated, dual student
  - gear retraction - premature, dual student (contributing factor)
  - proper climb rate - not attained, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (cause)
  - propeller system/accessories,blade - overload
  - propeller system/accessories - vibration
  - aborted takeoff - performed, pilot in command(cfi)

## Analysis

DURING THE TAKEOFF PORTION OF A TOUCH-&-GO, THE STUDENT PLT FORGOT TO RAISE THE FLAPS. THE INSTRUCTOR (CFI) YELLED AT THE STUDENT '...THE FLAPS', & AT THE SAME TIME, REACHED FOR THE FLAPS WITH HIS RIGHT HAND UNDER THE CONTROL WHEEL. SUBSEQUENTLY, THE LEFT PROP HIT THE SURFACE AT ABOUT THE SAME TIME A CLIMB WAS ATTEPMTED AT THE BLUE LINE SPEED. ALSO AT ABOUT THAT SAME TIME, THE CFI NOTED AN IN-TRANSIT GEAR LIGHT. THE CFI NOTED A SEVERE VIBRATION & ABORTED THE TAKEOFF. THE ACFT'S PROPS WERE DAMAGED & ITS UNDERSIDE WAS SCRAPED.

## Aircraft

- Registration: [N6697L](https://openairdocs.org/deregistered/N6697L-2014-11-25), registration cancelled 2014-11-25, S/N ME-271, built 1979 (OpenAirDocs)
- Reported make and model: BEECH 76
- Registry model: [Beech 76](https://openairdocs.org/model/beech-76) (registry code 1153005) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: ME-271
- Airframe hours: 1
- Engines: LYCOMING O-360-A1G6D 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Allegheny Beechcraft
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, March 3, 1984, 1 hours before
- Departed: AGC, ALLEGHENY CO., PA
- Airport: AGL, Allegheny Co., runway 10, 6,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 4,327 total, 242 in this make and model, 4,188 as pilot in command, 40 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Temperature: 45 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19840317005789A](https://openairdocs.org/incident/19840317005789A), Mar 17, 1984: Beech 76, West Mifflin, PA, Substantial damage. Pilots lost control of aircraft during touch and go when student forgot the flaps and instructor tried to correct.

## Other investigations on N6697L (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR12LA128](https://openairdocs.org/ntsb/WPR12LA128), Mar 11, 2012: Beech 76 (N6697L), Rio Linda, CA, substantial damage. Probable cause: A loss of engine power due to carburetor icing, and the pilot's failure to use carburetor heat during descent while operating in an area conducive to carburetor icing.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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