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20220624008069I

Incident · No damage
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FAA incident report · Gulfstream G4 · Honolulu, HI · June 24, 2022

FAA Aviation Safety Information Portal

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Date
June 24, 2022 · 21:03 local
Place
Honolulu, HI
Airport
Daniel K Inouye International
Phase of flight
Cruise/Level Flight
Operating rules
General operating rules (Part 91)
Operator
SAOA
Damage
No damage
Aircraft
N307EW
Reported as
Gulfstream G4
People aboard
7
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Airline transport
Pilot’s flight hours
11,939 total
N307EWRegistered now · Gulfstream Aerospace G-IVS/N 1051 · Built 1988Airframe modelGulfstream Aerospace G-IVEngine modelRolls-Royce TAY MK 610-8Turbo-fan

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Friday, June 24, 2022, at approximately 2103 hrs. Hawaii standard time (HST), a 1988 Gulfstream aerospace model g-iv, registration number N307EW (s/n 1051), reported and declared an in-flight emergency and landed on the island of oahu at the Honolulu international airport (hnl), Honolulu, Hawaii.

FAA form 8020-9, indicated aircraft N307EW was operating 100 miles west of oahu at flight level 410 when the flight crew reported smoke in the cockpit due to a battery pack overheating. Aircraft pilot in command, PIC, reported an in-flight emergency with smoke in the cockpit. The aircraft and crew were contracted by the department of defense, DOD, to calibrate a halas sensor system with a laser. The halas sensor system is powered by 3 large lithium ion batteries. The halas equipment is located in the aft section of the aircraft cargo area where the smoke originated. No injuries reported.

Saturday, 06/25/2022 at approximately 1030HRS:

FAA on scene and conducted routine investigative interviews and verified information. Reviewed, photographed and inspected aircraft documents, cabin cargo area, batteries, structural integrity of aircraft of affected area.

Sunday, 6/26/2022: maintenance technicians removed all fire extinguishing agent from cabin / cargo area. Subsequently, maintenance technicians prepare to remove cabin cargo floorboards to prepare for next day inspection of aircraft structural members.

Monday, 6/27/2022 at approximately 1030 hrs met with privacy data omitted engineer, flight crew members and maintenance technicians to discuss root cause of battery overheat. Per NTSB request, photographed and inspected aircraft structural members beneath floorboards of battery area. No compromise of structural members or any chemical leakage noted.

As the FAA filed it

FRIDAY, JUNE 24, 2022, AT APPROXIMATELY 2103 HRS. HAWAII STANDARD TIME (HST), A 1988 GULFSTREAM AEROSPACE MODEL G-IV, REGISTRATION NUMBER N307EW (S/N 1051), REPORTED AND DECLARED AN IN-FLIGHT EMERGENCY AND LANDED ON THE ISLAND OF OAHU AT THE HONOLULU INTERNATIONAL AIRPORT (HNL), HONOLULU, HAWAII.

FAA FORM 8020-9, INDICATED AIRCRAFT N307EW WAS OPERATING 100 MILES WEST OF OAHU AT FLIGHT LEVEL 410 WHEN THE FLIGHT CREW REPORTED SMOKE IN THE COCKPIT DUE TO A BATTERY PACK OVERHEATING. AIRCRAFT PILOT IN COMMAND, PIC, REPORTED AN IN-FLIGHT EMERGENCY WITH SMOKE IN THE COCKPIT. THE AIRCRAFT AND CREW WERE CONTRACTED BY THE DEPARTMENT OF DEFENSE, DOD, TO CALIBRATE A HALAS SENSOR SYSTEM WITH A LASER. THE HALAS SENSOR SYSTEM IS POWERED BY 3 LARGE LITHIUM ION BATTERIES. THE HALAS EQUIPMENT IS LOCATED IN THE AFT SECTION OF THE AIRCRAFT CARGO AREA WHERE THE SMOKE ORIGINATED. NO INJURIES REPORTED.

SATURDAY, 06/25/2022 AT APPROXIMATELY 1030HRS:

FAA ON SCENE AND CONDUCTED ROUTINE INVESTIGATIVE INTERVIEWS AND VERIFIED INFORMATION. REVIEWED, PHOTOGRAPHED AND INSPECTED AIRCRAFT DOCUMENTS, CABIN CARGO AREA, BATTERIES, STRUCTURAL INTEGRITY OF AIRCRAFT OF AFFECTED AREA.

SUNDAY, 6/26/2022: MAINTENANCE TECHNICIANS REMOVED ALL FIRE EXTINGUISHING AGENT FROM CABIN / CARGO AREA. SUBSEQUENTLY, MAINTENANCE TECHNICIANS PREPARE TO REMOVE CABIN CARGO FLOORBOARDS TO PREPARE FOR NEXT DAY INSPECTION OF AIRCRAFT STRUCTURAL MEMBERS.

MONDAY, 6/27/2022 AT APPROXIMATELY 1030 HRS MET WITH ^PRIVACY DATA OMITTED^ ENGINEER, FLIGHT CREW MEMBERS AND MAINTENANCE TECHNICIANS TO DISCUSS ROOT CAUSE OF BATTERY OVERHEAT. PER NTSB REQUEST, PHOTOGRAPHED AND INSPECTED AIRCRAFT STRUCTURAL MEMBERS BENEATH FLOORBOARDS OF BATTERY AREA. NO COMPROMISE OF STRUCTURAL MEMBERS OR ANY CHEMICAL LEAKAGE NOTED.