N4247V

SIKORSKY S-58JT · Rotorcraft · 1 engine · 14 seats · Valid Registration

Registered owner: SH1P HOLDINGS LLC, KS (owner ≠ operator)

Operators of this aircraft

Who operated this tail, and how firmly we know it.

OperatorRolePeriodBasis
Midwest Helicopter Airways, Inc. (JTKA)Certificate holderMatched by certificate designator

Accident & incident history

CESSNA 170 Serious injury Part 91operator not named in the NTSB record
Source: NTSB case LAX68F0059

Maintenance disclosures

Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.

3 reports on file, 1998-06-16 – 2026-08-17.

VIBRATION/BUFFET · 2026-08-17 Matched by certificate designator
ATA 6300

Part: COUPLING — CRACKED (ZONE 100) · airframe 14,558 hrs · 10,989 cycles

CRACKED AROUND METAL ON COUPLING

Source: SDR 2026FA0000648
VIBRATION/BUFFET · 2024-09-06 Matched by certificate designator
ATA 6700

Part: DRIVE SHAFT — CRACKED (GEARBOX) · airframe 14,139 hrs

DURING GROUND RUN A HIGH FREQUENCY VIBRATION WAS NOTICED BY THE PILOT AND THE AIRCRAFT WAS SHUTDOWN. DURING SHUTDOWN A MECHANIC NOTICED THE ANGLE GEARBOX (AGB) DRIVESHAFT APPEARED "BLURRY". UPON FURTHER INVESTIGATION IT WAS DISCOVERED THAT THE ANGLE GEARBOX INPUT FLANGE WAS CRACKED AT THE FLANGE TO FLEX COUPLING ATTACHMENT HOLE. THE AGB WAS REMOVED AND A SERVICABLE AGB WAS INSTALLED. AS A PRECAUTION THE DRIVE SHAFT ATTACHED TO THE INPUT FLANGE WAS ALSO REMOVED AND A SERVICABLE DRIVE SHAFT WAS INSTALLED. POST MAINTENANCE GROUND RUN DID NOT PRODUCE A VIBRATION AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Source: SDR 2024FA0000706
WARNING INDICATION · 1998-06-16 Unresolved
ATA 6320

Part: OIL PUMP — JAMMED (ANGLE GEARBOX)

LOW OIL PRESSURE LIGHT ILLUMINATED IN FLIGHT. A PRECAUTIONARY LANDING WAS MADE. ON SITE INSPECTION DETERMINED THAT A PIECE OF COTTER PIN HAD BROKEN OFF AND WAS CAUGHT IN THE PUMP. THE BROKEN COTTER PIN AND OIL PUMP WERE REPLACED. UPON RUN-UP, SYSTEM CHECKED GOOD.

Source: SDR 98ZZZX2585