# NTSB ATL83IA197: Boeing B-737-222, N752N, Memphis, TN, May 23, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: May 23, 1983, 10:45 local (15:45 UTC)
- Place: Memphis, TN
- Location: 35.0424° N, 89.9767° W: Placed by OpenAirDocs at FREDERICK W SMITH INTL/MEMPHIS (MEM), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.0424&lon=-89.9767&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 59 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 5987
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83IA197
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5987/pdf
- Page: https://openairdocs.org/ntsb/ATL83IA197

## Sequence of events

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

- Airframe/component/system failure/malfunction, taxi - to takeoff
  - electrical system,electric relay - popped/tripped (cause)
  - air cond/heating/pressurization - overtemperature

## Analysis

A MALFUNCTIONING RELAY RESULTED IN OVERHEATING OF AN AIR CONDITIONING PACK CAUSING THE EVACUATION OF THE ACFT PRIOR TO TAKEOFF.

## Aircraft

- Registration: N752N (not matched to a registry record)
- Reported make and model: BOEING B-737-222
- Category: Airplane
- Serial number: 19073
- Engines: P&W JT8D-7 14000 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Registered owner: Piedmont Airlines, Inc.
- Airworthiness certificate: Standard, Normal
- Flight plan: IFR
- Airport: MEM, Memphis Int'L.

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 10 knots
- Visibility: 12 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 73 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: MEM

## FAA reports on this event (1)

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

- [Incident 19830523028679I](https://openairdocs.org/incident/19830523028679I), May 23, 1983: Boeing 737222, Memphis, TN. Smoke in cabin while taxing. Smoke came from an overheated air conditioning pack. Malfunctioning battery bus relay.

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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