# Service difficulty reports: N117NC

A list on [N117NC](https://openairdocs.org/aircraft/N117NC.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

Page 1 of 2 · 54 reports

- [SDR 2025F00098](https://openairdocs.org/sdr/2025F00098.md): Stiffener · cracked · Apr 22, 2025 · N117NC · Bolkms BK117C1 · Aircraft Structures
  > INSTRUMENT PANEL STIFFENER CRACKED
- [SDR QMLA2012041312060](https://openairdocs.org/sdr/QMLA2012041312060.md): Casting · cracked · Apr 13, 2012 · N117NC · Bolkms BK117C1 · Tail Rotor Gearbox
  > FOUND OIL LEAKING AROUND VERTICAL FIN AREA. INSPECTED AREA AND FOUND TAIL ROTOR GEARBOX LEAKING AND NOTICED THAT TAIL ROTOR CASTING WAS ALSO CRACKED. UPON DISASSEMBLY FOUND THAT TAIL ROTOR HEAD BOLT HAS BEEN GALLED AND TEFLON FROM TORSION TENSION STRAP HAS BE
- [SDR QMLA052309018](https://openairdocs.org/sdr/QMLA052309018.md): Chip Detector · illuminated · May 23, 2009 · N117NC · Bolkms BK117C1 · Tail Rotor System
  > IN CRUISE FLIGHT, TO PICK UP A PATIENT AT 2500MSL, ACFT EXPERIENCED A T/R CHIP LIGHT. THE ACFT COMPLETED THE EMERGENCY PROCEDURE FOR SAME, DIVERTED TO AN AIRPORT ABOUT 3 MILES AWAY, CALLING THE COMM CENTER AND ADVISED OF THE SITUATION. NORMAL SHUTDOWN COMPLETE
- [SDR BAQA200700033](https://openairdocs.org/sdr/BAQA200700033.md): Blade · cracked · Oct 2, 2007 · N117NC · Bolkms BK117C1 · Tail Rotor Blades
  > WHILE PERFORMING A PREFLIGHT A CRACK WAS FOUND IN THE TAIL ROTOR BLADE NEAR THE DATA TAG.
- [SDR BAQA094310](https://openairdocs.org/sdr/BAQA094310.md): Indicator · inoperative · May 3, 2004 · N117NC · Bolkms BK117C1 · Engine RPM Indicating System
  > GAUGE BACKLIGHTING INOPERATIVE. REPLACED WITH SERVICABLE UNIT. 05/05/2004
- [SDR BAQA092676](https://openairdocs.org/sdr/BAQA092676.md): Blower · failed · Feb 12, 2004 · N117NC · Bolkms BK117C1 · Air Distribution Fan
  > BLOWER FAILED OUT OF BOX. REPLACED WITH SERVICABLE UNIT. 02/12/2004
- [SDR BAQA092577](https://openairdocs.org/sdr/BAQA092577.md): Wire Harness · damaged · Feb 2, 2004 · N117NC · Bolkms BK117C1 · Engine Control System Wiring
  > FIRE DAMAGE, N2 WIRE OUTER INSULATION. REPLACED WITH SERVICEABLE UNIT 02/09/2004
- [SDR BAQA092575](https://openairdocs.org/sdr/BAQA092575.md): Bleed Valve · worn · Jan 28, 2004 · N117NC · Bolkms BK117C1 · Compressor Bleed Valve
  > WARRANTY. UNIT COVERED UNDER SUPPORT BY HOUR. UNIT EXTREMELY WORN. REPLACED WITH SERVICEABLE UNIT. 02/09/2004
- [SDR BAQA092574](https://openairdocs.org/sdr/BAQA092574.md): Bleed Valve · worn · Jan 28, 2004 · N117NC · Bolkms BK117C1 · Compressor Bleed Valve
  > WARRANTY- COVERED BY SUPPORT BY HOUR. UNIT EXTREMELY WORN. REPLACED WITH SERVICEABLE UNIT. 02/09/2004
- [SDR BAQA091408](https://openairdocs.org/sdr/BAQA091408.md): Bushing · defective · Dec 6, 2003 · N117NC · Bolkms BK117C1 · Tail Rotor Control System
  > TAIL ROTOR ACTUATOR LOWER BUSHING DEFECTIVE. REPLACED WITH SERVICEABLE UNIT. 12/11/03
- [SDR BAQA087569](https://openairdocs.org/sdr/BAQA087569.md): Starter Gen · inoperative · Jun 1, 2003 · N117NC · Bolkms BK117C1 · Starter-Generator
  > STARTER GENERATOR INOPERATIVE. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA084085](https://openairdocs.org/sdr/BAQA084085.md): Indicator · sticking · Feb 5, 2003 · N117NC · Bolkms BK117C1 · Engine RPM Indicating System
  > TRIPLE TACH NR NEEDLE STICKS.
- [SDR BAQA084043](https://openairdocs.org/sdr/BAQA084043.md): Battery · worn · Jan 28, 2003 · N117NC · Bolkms BK117C1 · DC Generating System
  > INTERMITTENT CHARGE OF BATTERY. NO CHARGE LIGHT ON. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA081531](https://openairdocs.org/sdr/BAQA081531.md): Valve · interference · Nov 25, 2002 · N117NC · Bolkms BK117C1 · Heating System
  > HEATER MIXIING VALVE HAS INTERMITTENT OPERATION. REPLACED WITH SERVICEABLE UNIT.
- [SDR 20000413SH016](https://openairdocs.org/sdr/20000413SH016.md): Indicator · inoperative · Jan 19, 2000 · N117NC · Bolkms BK117C1 · Rotor Drive Indicating System
  > TRANS OIL INDICATION LIGHT INOPERATIVE. REMOVED AND REPLACED. (X)
- [SDR 99ZZZX2876](https://openairdocs.org/sdr/99ZZZX2876.md): Bearing · worn · May 17, 1999 · N117NC · Bolkms BK117C1 · Tail Rotor Head
  > TAIL ROTOR BEARINGS WORN. REF: RMA NR R020377. REMOVED AND REPLACED.
- [SDR 99ZZZX1257](https://openairdocs.org/sdr/99ZZZX1257.md): Indicator · inaccurate · Oct 7, 1998 · N117NC · Bolkms BK117C1 · Engine BMEP/Torque Indicating
  > INDICATOR HAS INTERMITTENT TORQUE SPLITS. AIRCRAFT HAD 920.5 HOURS WHEN PROBLEM STARTED. REMOVED AND REPLACED.
- [SDR 99ZZZX909](https://openairdocs.org/sdr/99ZZZX909.md): Hinge · cracked · Oct 5, 1998 · N117NC · Bolkms BK117C1 · Service Doors
  > DOOR HINGE CRACKED. PART SCRAPPED ON SITE. REF: RMA NR R014017. REMOVED AND REPLACED.
- [SDR 99ZZZX1256](https://openairdocs.org/sdr/99ZZZX1256.md): Firewall · cracked · Aug 25, 1998 · N117NC · Bolkms BK117C1 · Fuselage Main, Bulkhead
  > FIREWALL CRACKED IN SEVERAL PLACES. REF: RMA NR R016840. REMOVED AND REPLACED.
- [SDR 99ZZZX1255](https://openairdocs.org/sdr/99ZZZX1255.md): Firewall · cracked · Aug 25, 1998 · N117NC · Bolkms BK117C1 · Fuselage Main, Bulkhead
  > FIREWALL CRACKED IN SEVERAL PLACES. REF: RMA NR R016840. REMOVED AND REPLACED.
- [SDR 99ZZZX1254](https://openairdocs.org/sdr/99ZZZX1254.md): Firewall · cracked · Aug 25, 1998 · N117NC · Bolkms BK117C1 · Fuselage Main, Bulkhead
  > FIREWALL CRACKED IN SEVERAL PLACES. REF: RMA NR R016840. REMOVED AND REPLACED.
- [SDR 98ZZZX1751](https://openairdocs.org/sdr/98ZZZX1751.md): Switch · failed · Apr 16, 1998 · N117NC · Bolkms BK117C1 · DC Generating System
  > SWITCH TIES INTERMITTENTLY. REMOVED AND REPLACED.
- [SDR 98ZZZX1747](https://openairdocs.org/sdr/98ZZZX1747.md): Counter · failed · Apr 12, 1998 · N117NC · Bolkms BK117C1 · Independent Instruments
  > CYCLE COUNTER QUIT OPERATING AFTER APPROXIMATELY 2 MONTHS. REMOVED AND REPLACED.
- [SDR 98ZZZX1750](https://openairdocs.org/sdr/98ZZZX1750.md): Transducer · failed · Mar 23, 1998 · N117NC · Bolkms BK117C1 · Main Rotor Gearbox
  > TRANSDUCER FAILED. NEVER USED. REMOVED AND REPLACED.
- [SDR 98ZZZX1749](https://openairdocs.org/sdr/98ZZZX1749.md): Counter · failed · Mar 23, 1998 · N117NC · Bolkms BK117C1 · Independent Instruments
  > CYCLE COUNTER NEW - NEVER USED. REMOVED AND REPLACED.
- [SDR 98ZZZX1752](https://openairdocs.org/sdr/98ZZZX1752.md): Actuator · failed · Mar 13, 1998 · N117NC · Bolkms BK117C1 · Hydraulic Power System
  > HEATER CAUTION LIGHT COMES ON WITH BOTH ENGINE HEATERS SELECTED. REMOVED AND REPLACED.
- [SDR 98ZZZX1748](https://openairdocs.org/sdr/98ZZZX1748.md): Indicator · intermittent · Mar 7, 1998 · N117NC · Bolkms BK117C1 · Fuel Quantity Indicator
  > MAIN FUEL INDICATION INTERMITTENTLY DROPS TO 5 GALLONS THEN RETURNS TO NORMAL. REMOVED AND REPLACED.
- [SDR 98ZZZX1509](https://openairdocs.org/sdr/98ZZZX1509.md): Computer · failed · Feb 6, 1998 · N117NC · Bolkms BK117C1 · Autopilot Computer
  > CSAS COMPUTER PITCH LIGHT ILLUMINATED INTERMITTENTLY IN-FLIGHT. REMOVED AND REPLACED.
- [SDR 98ZZZX1513](https://openairdocs.org/sdr/98ZZZX1513.md): Computer · failed · Jan 30, 1998 · N117NC · Bolkms BK117C1 · Autopilot Computer
  > CSAS COMPUTER INTERMITTENT. ROLL AND PITCH CHANNELS BOTH DROP OFF-LINE AND CANNOT BE RESET OR JUST WILL NOT COME ON-LINE. REMOVED AND REPLACED.
- [SDR 98ZZZX1832](https://openairdocs.org/sdr/98ZZZX1832.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - 2 SCRAPPED ON SITE. REMOVED AND REPLACED 2 EACH.
- [SDR 98ZZZX1831](https://openairdocs.org/sdr/98ZZZX1831.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - 2 SCRAPPED ON SITE. REMOVED AND REPLACED 2 EACH.
- [SDR 98ZZZX1830](https://openairdocs.org/sdr/98ZZZX1830.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - 2 SCRAPPED ON SITE. REMOVED AND REPLACED 2 EACH.
- [SDR 98ZZZX1829](https://openairdocs.org/sdr/98ZZZX1829.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - 7 SCRAPPED ON SITE.
- [SDR 98ZZZX1828](https://openairdocs.org/sdr/98ZZZX1828.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEAL USED TO REPAIR FUEL LEAK - SCRAPPED ON SITE. REMOVED AND REPLACED.
- [SDR 98ZZZX1827](https://openairdocs.org/sdr/98ZZZX1827.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - SCRAPPED ON SITE. REMOVED AND REPLACED 2 EA.
- [SDR 98ZZZX1826](https://openairdocs.org/sdr/98ZZZX1826.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEAL USED TO REPAIR FUEL LEAK - SCRAPPED ON SITE. REMOVED AND REPLACED.
- [SDR 98ZZZX1825](https://openairdocs.org/sdr/98ZZZX1825.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEAL USED TO REPAIR FUEL LEAK - SCRAPPED ON SITE. REMOVED AND REPLACED.
- [SDR 98ZZZX1824](https://openairdocs.org/sdr/98ZZZX1824.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - SCRAPPED ON SITE. REMOVED AND REPLACED 4 EACH.
- [SDR 98ZZZX1823](https://openairdocs.org/sdr/98ZZZX1823.md): Seal · leak · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Aircraft Fuel Distribution System
  > SEALS USED TO REPAIR FUEL LEAK - SCRAPPED 4 ON SITE. REMOVED AND REPLACED 4 EACH.
- [SDR 98ZZZX1511](https://openairdocs.org/sdr/98ZZZX1511.md): Valve · failed · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Fuel Storage
  > VENT VALVE FAILED. REMOVED AND REPLACED.
- [SDR 98ZZZX1510](https://openairdocs.org/sdr/98ZZZX1510.md): Valve · failed · Jan 9, 1998 · N117NC · Bolkms BK117C1 · Fuel Storage
  > VENT VALVE FAILURE. ALLOWS FUEL TO VENT. REMOVED AND REPLACED.
- [SDR 98ZZZX952](https://openairdocs.org/sdr/98ZZZX952.md): Valve · failed · Dec 29, 1997 · N117NC · Bolkms BK117C1 · Pneumatic Distribution System
  > BLEED VALVE DOES NOT OPERATE. REMOVED AND REPLACED.
- [SDR 98ZZZX951](https://openairdocs.org/sdr/98ZZZX951.md): Control Unit · failed · Dec 28, 1997 · N117NC · Bolkms BK117C1 · Heating System
  > HEATER OVERHEATED. REMOVED AND REPLACED.
- [SDR 98ZZZX953](https://openairdocs.org/sdr/98ZZZX953.md): Valve · sticks · Dec 18, 1997 · N117NC · Bolkms BK117C1 · Pneumatic Distribution System
  > VALVE STICKS WHEN SELECTING HEAT. REMOVED AND REPLACED.
- [SDR 98ZZZX366](https://openairdocs.org/sdr/98ZZZX366.md): Horizon · failed · Dec 4, 1997 · N117NC · Bolkms BK117C1 · Attitude Gyro and Indicating System
  > INOPERABLE FOR P/R CSAS SYSTEM. REMOVED AND REPLACED.
- [SDR 98ZZZX178](https://openairdocs.org/sdr/98ZZZX178.md): Vapor Seal · malfunction · Dec 1, 1997 · N117NC · Bolkms BK117C1 · Fuel Storage
  > INSPECTED FUEL SYSTEM AND ENGINES AND FOUND FUEL SEEPING FROM THE RT FORWARD FUEL VENT. APPLIED AIR BACK PRESSURE TO THE RT FORWARD VENT VALVE. TOPPED FUEL OFF AND FLEW AIRCRAFT. NO FUEL WAS LEAKING FROM THE RIGHT FORWARD VENT. SUSPECT VENT VALVE WAS STUCK
- [SDR 98ZZZX328](https://openairdocs.org/sdr/98ZZZX328.md): Bracket · broken · Nov 25, 1997 · N117NC · Bolkms BK117C1 · Main Rotor Control
  > BRACKET WELDS BROKE. REMOVED AND REPLACED.
- [SDR 98ZZZX273](https://openairdocs.org/sdr/98ZZZX273.md): Computer · failed · Nov 4, 1997 · N117NC · Bolkms BK117C1 · Autopilot Computer
  > SPAS COMPUTER HAS IMPROPER OUTPUT VOLTS. REMOVED AND REPLACED.
- [SDR 98ZZZX272](https://openairdocs.org/sdr/98ZZZX272.md): Pitch Link Assy · worn · Oct 28, 1997 · N117NC · Bolkms BK117C1 · Tail Rotor Control System
  > PITCH LINK ASSY (2 EACH) BEARINGS WORN. REMOVED AND REPLACED.
- [SDR 97ZZZX3663](https://openairdocs.org/sdr/97ZZZX3663.md): Static Inverter · malfunctioned · Jun 28, 1997 · N117NC · Bolkms BK117C1 · AC Inverter
  > INVERTER CAUSES INTERMITTENT FAILURES IN SYSTEMS IT PROVIDES BUSS FOR. REMOVED AND REPLACED

Next page: https://openairdocs.org/aircraft/N117NC/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE n_number = 'N117NC' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N117NC/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.