# NTSB NYC82IA137: Boeing 727-233, Flushing, NY, July 5, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: July 5, 1982, 13:59 local (17:59 UTC)
- Place: Flushing, NY
- Coordinates: 40.770648, -73.869224 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.7706&lon=-73.8692&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 74 uninjured
- Status: Completed, report July 5, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70693
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC82IA137
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70693/pdf
- Page: https://openairdocs.org/ntsb/NYC82IA137

## Sequence of events

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

- Airframe/component/system failure/malfunction, climb - to cruise
  - flight control,leading edge flap attachment - fatigue (cause)
  - maintenance,lubrication - inadequate, company maintenance personnel (cause)
  - flight control,leading edge flap - movement restricted

## Analysis

DURING INITIAL CLIMB, THE AMBER LEADING EDGE FLAT LIGHT REMAINED LIT AFTER FLAP RETRACTION FROM 5 DEGREES TO 2 DEGREES. MODERATE AILERON AND RUDDER INPUTS WERE REQUIRED TO MAINTAIN WINGS LEVEL FLIGHT. AFTER CYCLING THE FLAPS FROM 5 BACK TO 2 DEGREES, THE SAME CONDITION EXISTED AND THE SECOND OFFICER CONFIRMED THAT THE NO. 7 SLAT WAS NOT RETRACTING. THE FLAPS WERE THEN EXTENDED TO 15 DEGREES, ELIMINATING THE ROLLING TENDENCY, AND THE FLIGHT RETURNED TO LAGUARDIA. SUBSEQUENT INSPECTION REVEALED THAT AN INBOARD SLAT TRACK ROLLER SUPPORT BOLT FOR THE NO. 7 SLAT HAD FAILED. THE ROLLER WAS FOUND LODGED BETWEEN THE INBOARD TRACK AND WING STRUCTURE. THE ROLLER WAS SEIZED WITH SEVERAL BEARINGS MISSING. LITTLE LUBRICATION WAS EVIDENT. THE BOLT FRACTURED THROUGH A LUBRICATION HOLE THAT THE ROLLER MOUNTS OVER. BOLT FRACTURE FACES EXHIBITED STRIATIONS AND CUPPING. TOTAL TIME ON BOLT AND ROLLER WAS 18,815 HOURS.

## Aircraft

- Registration: CGAAA (not matched to a registry record)
- Reported make and model: BOEING 727-233
- Category: Airplane
- Serial number: 20932
- Airframe hours: 18816
- Engines: P & W JT8D-15 15500 lbs thrust turbo fan
- Damage: Minor damage
- Flight: Part 129
- Operator: Air Canada
- Registered owner: Air Canada
- Departed: LGA, FLUSHING, NY
- Destination: CYUL, MONTREAL
- Flight plan: IFR
- Airport: LGA, Laguardia, runway 22, 7,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: unknown, valid medical--no waivers/lim.; flight hours: 10,076 total, 1,558 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 17 knots
- Visibility: 15 statute miles
- Temperature: 171 °F
- Altimeter: 30.00 inHg
- Observed at: LGA

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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