N911AR
Registered owner: MIAMI DADE FIRE RESCUE, FL (owner ≠ operator)
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
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.
9 reports on file, 1995-09-12 – 2010-05-05.
Part: PACKING — FAILED (P3 FILTER COVER) · airframe 1,190 hrs · 7,713 cycles
HELICOPTER EXPERIENCED AN UNCOMMANDED ACCELERATION OF THE LEFT ENGINE DURING HOVER ON MAY 5, 2010. THE ENGINE N1 SPEED IMMEDIATELY WENT TO 112% AND THE HOT SECTION TEMPERATURES REACHED 989 DEGREES. THE ACFT ROTOR SYSTEM AND LT ENGINE POWER TURBINE WHEEL WERE THEN OVER SPED TO 133%. THE FAULT WHICH CAUSED THE UNCOMMANDED ACCELERATION WAS DETERMINED TO BE A PIECE OF PACKING DEBRIS WHICH ENTERED THE P3 SYSTEM WHEN THE P3 FILTER BOWL WAS REMOVED. THE SIZED OF THE PACKING DEBRIS WAS APPROXIMATELY .035 THE FILTER COVER PACKING IS NORMALLY FOUND CRUMBLING AND FLAKING AFTER BEING IN SERVICE FOR 50 HOURS. THE PRATT DESIGN OF THE P3 FILTER ASSEMBLY IS SUCH THAT ANY DEBRIS; IN THE FILTER BOWL, ON THE OUTSIDE OF THE FILTER, ON THE TOP OF THE FILTER, ON THE THREADS OF THE BOWL, ON THE THREADS OF THE HOUSING, OR UP INSIDE THE HOUSING, CAN PASS UNRESTRICTED INTO THE AUTOMATIC FUEL CONTROL UNIT. THERE ARE NO WARNING IN MANUFACTURERS MAINTENANCE PROCEDURE WARNING THAT DEBRIS AS SMALL AS .035 CAN RESULT IN UNCOMMANDED ENGINE ACCELERATION. THIS IS A PACKING FAILURE AT REMOVAL AND A LACK OF PRECAUTIONARY NOTICES (WARNINGS) IN THE MAINTENANCE MANUAL INFORMING MAINTENANCE TECHNICIANS OF THE SIGNIFICANT OF MISSING A VERY SMALL PIECE OF PACKING DEBRIS. THE P3 FILTER OPERATES BACKWARDS OF THE NORMAL OPERATION OF A FILTER. MANUFACTURER DESIGN HAS THE DEBRIS COLLECTED ON THE INSIDE OF THE FILTER, WHEREAS MOST FILTER COLLECT DEBRIS ON THE OUTSIDE.
Part: BEARING — WORN (T/R BLADE)
TAIL ROTOR BEARINGS WORN, TWO EACH RACES AND BEARINGS BRINELLED.
Part: INDICATOR — ERROR (FUEL SYS)
CUSTOMER NOTED DISCREPANCIES: (1) FUEL SYSTEM INDICATES 2080 LBS WHEN FULLY FUELED. (2) MAST SEAL HAS MINOR LEAK (3) BAGGAGE FIRE TEST LIGHT INOPERATIVE. CORRECTED CUSTOMER DISCREPANCIES.
Part: WORK DECK — SEPARATED (NR 1 ENG)
#1 ENGINE WORK DECK SEPARATED. INSTALLED SERVICEABLE WORK DECK S/N CS38X.
Part: BEARING — WORN (M/R)
BEARING WORN BEYOND LIMITS PER MANUFACTURER. PARTS SCRAPPED LOCALLY.
Part: BEARING — WORN (M/R)
BEARING WORN BEYOND LIMITS PER MANUFACTURER. PARTS SCRAPPED LOCALLY.
Part: LINK — WORN BEARINGS (M/R MAST)
REPAIR TO REPLACE WORN BEARINGS. REPLACEMENT PART INFORMATION LISTED BELOW: P/N 412-010-418-101, QTY 2 P/N 412-010-418-105, QTY 2, P/N412-010-423-103, QTY 2, P/N 412-010-424-103, QTY 4, P/N 412-010-427-101, QTY 2,
Part: MAST ASSY — SEAL LEAK (M/R)
INSPECT AND REPAIR DUE TO SEAL LEAKING. REPLACEMENT PART INFORMATION: P/N 29810-8056, SLEEVE, P/N 412-340-001-101, SEAL,
Part: CAP ASSY — CRACKED (M/R HUB)
M/R HUB LOCKS CRACKED.