N721AF
Registered owner: AVIATION17 LLC, NH (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| Cobalt Air, LLC (6CBA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
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.
5 reports on file, 2010-01-19 – 2019-09-05.
Part: UNKNOWN — ODOR (COCKPIT) · airframe 2,230 hrs · 2,118 cycles
PROBLEM: THE FLIGHT CREW REPORTED " BURNING SMELL COMING FROM ACS SYSTEM". RESOLUTION: MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT, THE FOLLOWING ACTION WAS ACCOMPLISHED " VISUALLY INSPECTED ACS DUCTING AND CLAMPS AND ENGINE COMPARTMENT. NO DEFECTS NOTED. RAN AIRCRAFT AND HEAT FOR 10 MIN IAW AMM 12-B-71-00-00-00A-903S-A. OPS CHECK GOOD. NO SMELLS. THE AIRCRAFT WAS RELEASED.
Part: BOLT — BROKEN (RT MLG) · airframe 6,770 hrs · 6,297 cycles
AFTER DEPARTURE RT GEAR UNSAFE LIGHT ILLUMINATED ON GEAR RETRACTION. THE ACFT DIVERTED & LANDED SAFELY. INSPECTION OF THE RT LG REVEALED THE LOWER RT LG ACTUATOR BOLT BROKEN AT THE NUT ATTACHMENT & WAS WORKING OUT OF THE GEAR MOUNTING HOLE. THE INNER BORE OF THE MLG WAS ALSO FOUND DAMAGED FROM THE BOLT BACKING OUT. THE BOLT PN 532.10.12.218 & MLG FITTING PN 532.10.12.206 WERE REPLACED WITH NEW.
Part: TRIM SYSTEM — MALFUNCTIONED (PITCH) · airframe 4,963 hrs · 4,627 cycles
DURING A TRAINING FLIGHT, THE CREW REPORTED A PITCH TRIM RUNAWAY WITH AUDIBLE WARBLE. STABILIZER TRIM AND AUTO PILOT SYSTEMS WERE OPERATED AND TESTED IAW THE AMM 12-A-27-40-00-00A-903A-A, 12-A-22-10-00-00A-903A-A. PROBLEM COULD NOT BE DUPLICATED. RELAYS K021,K022 AND K241 PN 974.20.01.212 AND 974.20.01.214 WERE CHANGED AS A PRECAUTION. NOTE: RELAYS TIME IN SERVICE ARE AS FOLLOWS K021=1774.3 K022= 4962.8 K241= 4962.8.
Part: ATTACH FITTING — OUT OF ALIGNMENT (HORIZONTAL STAB) · airframe 3,743 hrs · 3,471 cycles
THE HORIZONTAL STABILIZER ATTACHMENT FITTING, WHERE THE PITCH TRIM ACTUATOR IS SECURED TO THE STABILIZER. EACH SIDE OF THE ATTACHMENT FITTING HAS 2 LUGS. ON THE LT SIDE, THESE 2 LUGS ARE SEPARATING. THE GAP WAS MEASURED WITH A FEELER GUAGE, AND FOUND TO BE .406MM. THERE IS NO EVIDENCE OF DAMAGE TO THE STABILIZER. THE BRACKET PN IS 555.10.12.150, ANGLE FITTING LT. THE ACFT MFG ISSUED A REAIR MEMO WITH STATEMENT OF APPROVED DESIGN DATA WITH THE FOLLOWING INSTRUCTIONS. CHECK THE LUGGED FACE OF THE PN 555.1.12.150 (ANGLE FITTING) FOR STRAIGHTNESS. IF WITHIN LIMITS, COMPLETE A VISUAL AND NDT INSP (DYE PENETRANT OR EDDY CURRENT) OF THE ANGLE FITTING AND THE BOLTS. IF NO CRACKS OR DEFECTS NOTED, REINSTALL THE FITTING, USING SEALANT.
Part: BRAKE DISC — BROKEN (ZONE 700) · airframe 2,760 hrs · 2,512 cycles
DURING A LINE CHECK DISCOVERED THE RT BRAKE OTBD BRAKE DISC WAS BROKEN INTO 2 PIECES. REMOVED AND REPLACED BRAKE ASSY IAW MM INSTRUCTIONS.