N6470H
Registered owner: JB AIRCRAFT LLC, AK (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| JOHNSTON, THOMAS (S2TC) | Certificate holder | — | Matched by certificate designator |
| Flight Alaska | Operator | on 2007-01-07 | Operator named in NTSB report |
| YUTE AIR ALASKA | Operator | on 1988-09-09 | Operator named in NTSB report |
Accident & incident history
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.
12 reports on file, 2008-11-05 – 2015-04-07.
Part: CYLINDER HEAD — CRACKED (NR 1) · airframe 133,327 hrs
DURING 100HR INSPECTION BORESCOPING ENG, FOUND NR 1 CYLINDER CRACKED FROM LOWER SPARKPLUG BOSS TO EXHAUST VLV SEAT.
Part: CYLINDER HEAD — CRACKED (NR 3) · airframe 133,327 hrs
DURING 100HR INSPECTION BORESCOPING ENG, FOUND NR 3 CYLINDER CRACKED FROM SPARKPLUG BOSS TO EXHAUST VLV SEAT & VLV TO VLV.
Part: CYLINDER HEAD — CRACKED (NR 4) · airframe 133,327 hrs
DURING 100HR INSPECTION BORESCOPING ENG, FOUND NR 4 CYLINDER CRACKED FROM LOWER SPARKPLUG BOSS TO EXHAUST VLV SEAT.
Part: CYLINDER — CRACKED (NR 2) · airframe 33,327 hrs
DURING 100 HR INSPECTION BORESCOPING ENG, FOUND NR 2 CYLINDER CRACKED FROM LOWER SPARK PLUG BOSS APPROX 1/2 INCH TOWARDS EXHAUST VLV SEAT.
Part: UNKNOWN — FUMES (COCKPIT)
DURING TAKEOFF, SMELL OF SOLVENT, FUMES IN COCKPIT. SUSPECT RESIDUAL SOLVENT/OIL FROM RECENT ENGINE WAS TO BE THE CAUSE OF PROBLEM.
Part: CYLINDER — CRACKED (ENGINE)
UPON ENGINE DISMANTLE FOR O/H, 5 OUT OF 6 CYLINDERS HAD CRACKED CYLINDER HEADS. THE CRACKS ORIGINATED AT THE LOWER SPARK PLUG HOLE AND RADIATED OUT A THE 4 O`CLOCK POSITION FOR APPROX 1 INCH. AFFECTED SN: 4/ 526-A08-6893. NOTE: THIS INFO WAS SUBMITTED BY AN UNKNOWN PERSON TO THE AL03 FSDO. NO OTHER INFO AVAILABLE.
Part: CYLINDER — CRACKED (ENGINE)
UPON ENGINE DISMANTLE OR OVERHAUL, 5 OUT OF 6 CYLINDERS HAD CRACKED CYLINDER HEADS. THE CRACKS ORIGINATED AT THE LOWER SPARK PLUG HOLE AND RADIATED OUT AT THE 4 O`CLOCK POSITION FOR APPROX 1 INCH. AFFECTED SN: NR 5/ 526-A08-686889. NOTE: THIS INFO WAS SUBMITTED BY AN UNKNOWN PERSON TO THE FSDO. NO OTHER INFO AVAILABLE.
Part: CYLINDER — CRACKED (ENGINE)
UPON ENGINE DISMANTLE OR OVERHAUL, 5 OUT OF 6 CYLINDERS HAD CRACKED CYLINDER HEADS. THE CRACKS ORIGINATED AT THE LOWER SPARK PLUG HOLE AND RADIATED OUT AT THE 4 O`CLOCK POSITION FOR APPROX 1 INCH. AFFECTED SN: NR 2- 526-A08-6901. NOTE: THIS INFO WAS SUBMITTED BY AN UNKNOWN PERSON TO THE FSDO. NO OTHER INFO AVAILABLE.
Part: CYLINDER — CRACKED (ENGINE)
UPON ENGINE DISMANTLE OR OVERHAUL, 5 OUT OF 6 CYLINDERS HAD CRACKED CYLINDER HEADS. THE CRACKS ORIGINATED AT THE LOWER SPARK PLUG HOLE AND RADIATED OUT AT THE 4 O`CLOCK POSITION FOR APPROX 1 INCH. AFFECTED SN: NR 1- 526-A08-6899. NOTE: THIS INFO WAS SUBMITTED BY AN UNKNOWN PERSON TO THE FSDO. NO OTHER INFO AVAILABLE.
Part: CYLINDER — CRACKED (ENGINE)
UPON ENGINE DISMANTLE OR OVERHAUL, 5 OUT OF 6 CYLINDERS HAD CRACKED CYLINDER HEADS. THE CRACKS ORIGINATED AT THE LOWER SPARK PLUG HOLE AND RADIATED OUT AT THE 4 O`CLOCK POSITION FOR APPROX 1 INCH. AFFECTED SN: NR 3- 526-A08-6894. NOTE: THIS INFO WAS SUBMITTED BY AN UNKNOWN PERSON TO THE FSDO. NO OTHER INFO AVAILABLE.
Part: HOSE — LOOSE (FUEL SUPPLY)
FUEL SUPPLY HOSE FITTING AT FLOW DIVIDER LOOSENED.
Part: COLLECTOR — CRACKED (EXHAUST)
PILOT REPORTED SMOKE IN COCKPIT AFTER TAKEOFF, HE LANDED ACFT SAFELY AND TAXIED TO MAINT HANGER. MAINT FOUND HOLE AND CRACK IN EXHAUST NEAR HEATER MUFFLER. REMOVED AND REPLACED LT EXHAUST COLLECTOR, RAN UP ENGINE, FOUND OK FOR SERVICE ALL AD`S ON EXHAUST ARE CURRENT, NORMAL EXHAUST FAILURE THAT WOULD HAVE BEEN CAUGHT AT NEXT 100 HR INSP. ACFT WAS 30 HRS AWAY FROM NEXT 100 HR. (K)