# NTSB NYC84IA225: Boeing 737-130, N417PE, Portland, ME, June 28, 1984

- Type: NTSB incident investigation
- Classification: Incident · Minor injuries · Incident investigation · Final report
- Date: June 27, 1984, 23:34 local (Jun 28, 1984, 03:34 UTC)
- Place: Portland, ME
- Coordinates: 43.646349, -70.309166 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.6463&lon=-70.3092&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor, 121 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35445
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84IA225
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35445/pdf
- Page: https://openairdocs.org/ntsb/NYC84IA225

## Sequence of events

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

- Airframe/component/system failure/malfunction, descent - normal
  - electrical system,voltage regulator - failure,partial
  - remedial action - improper, pilot in command (contributing factor)
  - electrical system,voltage regulator - shorted (cause)
  - apu - improper use of, pilot in command (contributing factor)
  - electrical system - smoke (contributing factor)
- Airframe/component/system failure/malfunction, landing - flare/touchdown
  - landing gear,anti-skid brake system - inoperative (cause)
  - landing gear,tire - failure,total

## Analysis

CAPTAIN HEARD LOUD 'POP' AND OBSERVED AN ELECTRICAL PANEL INTERRUPTION ALONG WITH ILLUMINATION OF RT 'BUS OFF' & 'GEN OFF BUS' LIGHTS. NO GENERATOR AMPS OR FREQS WERE OBSERVED. FAINT ODOR OF SMOKE. CAPT STARTED APU AND PUT APU GENERATOR ON RT SIDE. 'BUS OFF' LIGHT EXTINQUISHED. WITHIN A MINUTE, SMOKE LEVEL INCREASED. CAPT REMOVED APU & CALLED FOR ELECTRICAL SMOKE AND FIRE CHECKLIST. EMERGENCY LANDING PERFORMED DURING WHICH ALL 4 MAIN GEAR TIRES FAILED. CREW & PAX PERFORMED EMERGENCY EVACUATION. INSPECTION OF ACFT DISCLOSED THE FAILURE IN THE GENERATOR CONTROL UNIT OCCURRED IN A CAPACITOR INSTALLED IN THE CIRCUIT. FAILURE OF THE #2 GENERATOR CONTROL UNIT RENDERED THE ANTI-SKID SYSTEM INOP RESULTING IN THE TIRE FAILURES.

## Aircraft

- Registration: [N417PE](https://openairdocs.org/deregistered/N417PE-1991-11-29), registration cancelled 1991-11-29, S/N 19794 (OpenAirDocs)
- Reported make and model: BOEING 737-130
- Registry model: [Boeing 737-130](https://openairdocs.org/model/boeing-737-130) (registry code 1384435) (OpenAirDocs)
- Category: Airplane
- Serial number: 19794
- Airframe hours: 49429
- Engines: P&W JT8D9 14000 lbs thrust turbo fan
- Damage: Minor damage
- Flight: Part 121
- Operator: People Express
- Airworthiness certificate: Standard, Transport
- Departed: EWR, NEWARK, NJ
- Destination: PWM, PORTLAND, ME
- Flight plan: IFR
- Airport: PWM, Portland, runway 11, 6,800 × 150 ft, macadam

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 200° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: PWM

## 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 19840627039019I](https://openairdocs.org/incident/19840627039019I), Jun 27, 1984: Boeing 737130, Portland, ME, Minor damage. Cockpit had electrical smoke due to failure of capacitor in generator control unit. Antiskid inoperative, tires blew

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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