# Accident 20241218020479A: Lockheed 382G-44K-30, Anchorage, AK, December 18, 2024

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: December 18, 2024, 16:15 local time
- Place: Anchorage, AK
- Airport: Ted Stevens Anchorage International
- Damage: Substantial damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: Air carrier (Part 121)
- Operator: LR7A
- Location: 62.0976° N, 162.6006° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=62.0976&lon=-162.6006&mi=10
- Aircraft: N403LC, registered now (https://openairdocs.org/aircraft/N403LC) (OpenAirDocs)
- Registry model: Lockheed 382G-44K-30 (registry code 526414Z, https://openairdocs.org/model/lockheed-382g-44k-30) (OpenAirDocs)
- Registry engine: Allison 501-D22A (registry code 03006, https://openairdocs.org/engine/allison-501-d22a) (OpenAirDocs)
- Reported make and model: LOCKHEED 382G-44K-30
- People aboard: 4
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 19,000 total
- NTSB investigation: [NTSB DCA25LA061](https://openairdocs.org/ntsb/DCA25LA061) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20241218020479A

## Narrative

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

AFTER DEPARTING ST MARY'S CLIMBING THROUGH FL 220 ABOUT 20 MIN AFTER TAKEOFF, EXPERIENCED A LOUD NOISE AND RAPID DEPRESSURIZATION.  PILOT AND CREW FOLLOWED COMPANY QRH, DECENDED TO FL 130 AND CONTINUED TO DESTINATION TED STEVENS INTERNATIONAL AIRPORT.  AN EMERGENCY WAS DECLARED BECAUSE UNRELATED TORQUE OSCILATION INDICATION PROMPTED THEM TO SHUT DOWN AN ENGINE IN FLIGHT.  LANDED AIRCRAFT WITHOUT FURTHER INCIDENT OR INJURY.  INSPECTION REVEALED A 14.5" CRACK IN THE FS 93 RADOME PRESSURE BULKHEAD.  ^PRIVACY DATA OMITTED^ APPROVED ERO AND REPAIRS WERE COMPLIED WITH BEFORE FAA COULD ASSIGN AN IIC.  INVESTIGATION REVEALED THAT THE SAME EXACT INCIDENT OCCURRED IN 2016.  THE RESULT WAS NO AD, BUT ^PRIVACY DATA OMITTED^ DID PUBLISH AN ALERT SERVICE BULLETIN TO INSPECT THE FS 93 RADOME PRESSURE BULKHEAD FOR FATIGUE/CRACKS.  THE LAST TIME THE INSPECTION WAS COMPLIED WITH WAS JULY 2024, ONLY 5 MONTHS BEFORE THE DEPRESSURIZATION EVENT.

## The NTSB's investigation of this event (1)

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.

- [NTSB DCA25LA061](https://openairdocs.org/ntsb/DCA25LA061), Dec 18, 2024: Lockheed 382G-44K-30 (N403LC), St. Mary's, AK, substantial damage. Probable cause: The fatigue failure of the forward pressure bulkhead canted web that originated from stress corrosion cracking areas. Contributing to the failure were inspection procedures and intervals inadequate…

## Other reports on N403LC (1)

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

- [Incident 20250924018919I](https://openairdocs.org/incident/20250924018919I), Sep 24, 2025: Lockheed 382G-44K-30 (N403LC), Sachs Harbour C, Minor damage. On September 24, 2025, at about 0947 mountain standard time, a Lockheed L-100-30 (model 382G-44K-30) hercules, operating under title 14 code of federal…

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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