# Incident 20210606004049I: Cessna 402C, Portland, ME, June 6, 2021

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 6, 2021, 18:29 local time
- Place: Portland, ME
- Airport: Portland International Jetport
- Damage: Minor damage
- Phase of flight: Landing: Approach
- Operating rules: Air taxi and commuter (Part 135)
- Operator: HYIA
- Location: 43.6456° N, 70.3086° W: Placed by OpenAirDocs at PORTLAND INTL JETPORT (PWM), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.6456&lon=-70.3086&mi=10
- Aircraft: N4630N, registered now (https://openairdocs.org/aircraft/N4630N) (OpenAirDocs)
- Registry model: Cessna 402C (registry code 207590R, https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Registry engine: Continental TSIO-520 series (registry code 17040, https://openairdocs.org/engine/continental-tsio-520-series) (OpenAirDocs)
- Reported make and model: CESSNA 402C
- Reported engine: CONT MOTOR TSIO-520 SER
- People aboard: 4
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 6,020 total, 4,620 in this make and model, 162 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20210606004049I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AS THE AIRCRAFT APPROACHED THE PORTLAND AIRPORT (PWM) FOR LANDING ON RUNWAY 18, THE CREW CONDUCTED THEIR LANDING FLOWS AND NOTICED A GEAR UNSAFE WARNING INDICATION WITH TWO GREEN DOWN AND LOCKED INDICATOR LIGHTS FOR THE LEFT AND RIGHT MAIN LANDING GEAR.  THE CREW CONDUCTED A GO-AROUND TO TROUBLESHOOT THE ISSUE AND PORTLAND TOWER ADVISED THE AIRCRAFT IT APPEARED AS THOUGH THE NOSE LANDING GEAR WAS STILL RETRACTED.  THE FLIGHT CREW COMPLETED ALL APPLICABLE CHECKLISTS, TO INCLUDE UTILIZING THE LANDING GEAR?S ?BLOW DOWN? BOTTLE TO EXTEND THE LANDING GEAR.  THE GEAR UNSAFE INDICATION REMAINED AND THE FLIGHT CREW DECLARED AN EMERGENCY AND CONDUCTED AN EMERGENCY LANDING ON RUNWAY 18 WITHOUT THE NOSE LANDING GEAR EXTENDED.  THE AIRCRAFT CAME TO A STOP ON THE RUNWAY AND THE TWO PASSENGERS WERE EVACUATED ON THE RUNWAY.  THE FLIGHT CREW AND PASSENGERS DID NOT SUSTAIN ANY INJURIES DURING THE LANDING AND SUBSEQUENT EVACUATION.  AN INSPECTION OF THE AIRCRAFT REVEALED THE RIGHT NOSE LANDING GEAR DOOR WAS JAMMED AGAINST THE NOSE LANDING GEAR IN A POSITION INTO THE LANDING GEAR WELL, BEYOND THE POINT THE LANDING GEAR DOOR WOULD NORMALLY CLOSE.  THIS JAMMED THE NOSE LANDING GEAR IN THE RETRACTED POSITION AND PREVENTED ITS EXTENSION.  ONCE THE NOSE LANDING GEAR WAS EXTENDED BY MAINTENANCE PERSONNEL, THE NOSE LANDING GEAR RETRACTION SPRING WAS FOUND TO HAVE FAILED.  ^PRIVACY DATA OMITTED^ MAINTENANCE STATED WITH THIS SPRING BROKEN, THERE IS ENOUGH PLAY IN THE NOSE LANDING GEAR DOORS FOR THE DOORS TO MAKE CONTACT WITH THE NOSE LANDING GEAR WHEEL DURING THE RETRACTION SEQUENCE.

## Other reports on N4630N (1)

Matched to the same aircraft by N-number and date.

- [Accident 19870911051849A](https://openairdocs.org/incident/19870911051849A), Sep 11, 1987: Cessna 402C (N4630N), Atlanta, GA, Substantial damage. Crew door came open in flight as pilot tried to secure it. The force of air broke pilots arm and damaged fuselage.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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