N11MM
Registered owner: N11MM LLC, AK (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| FLY 4 YOU INC (3SVA) | Certificate holder | — | Matched by certificate designator |
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
DURING CRUISE PHASE OF FLIGHT FROM SNP TO ANC PILOT FELT VIBRATION/BUFFETING AND SLOWED HIS AIRSPEED DOWN AND DESCENDED 2000-3000 FEET IN ALTITUDE THINKING MAYBE HE HIT TURBULENCE. ON DESCENT INTO ANC. PILOT TRIED LISTENING TO #2 COM WITH NO RESULTS AND SWITCHED BACK TO #1 COM. AFTER SHUTDOWN AND DEPLANING IT WAS NOTED THAT THE VERTICAL FIN TIP ANTENNA HAD SEPARATED FROM THE VERTICAL STABILIZER. IT WAS APPARENT THAT THE ANTENNA FIN TIP FAILED AS THE MOUNTING SCREWS WERE STILL INSTALLED IN THE VERTICAL AND ANTENNA COAX CONNECTOR WAS PULLED OFF COAX CABLE. INSPECTED AREA, NO OTHER DAMAGE IN SURROUNDING AREA IS NOTED. REPLACED FIN TIP ANTENNA WITH SERVICEABLE UNIT. TOTAL TIME ON PART COULD NOT BE DETERMINED AND IS
DURING TAXI-OUT FROM BASE, CAPT. NOTED SMOKE EMITTING FROM LIGHT SWITCH AREA AT THE LOWER LH CONSOLE. THEY TAXIIED BACK HOME BASE UNEVENTFULLY AND HANDED OVER THE AIRCRAFT TO MAINTENANCE. IT WAS IMMEDIATELY APPARENT THAT THE RH STROBE LIGHT CIRCUIT BREAKER SWITCH DID NOT SHUT THE STROBE LIGHTS OFF WHEN ACTUATED WITH THE BATTERY ON. BATTERIES WERE DISCONNECTED AND AN INSPECTION OF THE RH STROBE LIGHT SYSTEM WAS CONDUCTED. SEVERAL WIRES ALONG THE LENGTH OF THE CIRCUIT WERE DARK WITH A BURNT SMELL, AND A CHAFE TO GROUND WAS NOTED AT THE WINGTIP CONNECTOR TO THE STROBE LIGHTS. THE CB SWITCH WAS SLIGHTLY BULGED FROM OVERHEATING WITH A BURNT SMELL. NO OTHER SYSTEMS WERE MALFUNCTIONING, AND THE AFFECTED WIRES DID NO APPARENT DAMAGE TO THE SURROUNDING WIRING OR COMPONENTS. THE AFFECTED WIRING WAS REPAIRED OR REPLACED PER MM PRACTICES, ENSURING PROPER CLEARANACE AND CHAFE PROTECTION. THE AFFECTED 7 AMP CIRCUIT BREAKER SWITCH WAS REPLACED, AND A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED. TOTAL TIME ON THE AFFECTED CIRCUIT BREAKER SWITCH COULD NOT BE DETERMINED, AND IS ASSUMED TO BE ORIGINAL.
ENGINE COULD NOT BE TURNED BY HAND ON PRE-FLIGHT. THIRD ROTOR WAS FOUND TO HAVE PIECES MISSING FROM T-BLADES. ENGINE TEAR DOWN REVEALED THAT SEVERAL PLUGGING RIVETS INSTALLED IN HOLES AT THE BLADE ROOTS ON SECOND ROTOR HAD BROKEN. THE FLARED END ON ALL RIVETS WAS CONSIDERABLY SMALLER THAN THOSE ON NEW WHEELS. RIVETS HAD COME OUT OF SECOND ROTOR AND GONE THROUGH BLADES ON THIRD ROTOR. ALLIED SIGNAL SB TPE33172-2024 RELATES TO THIS PROBLEM.