# Service difficulty reports: N911TL, cancelled Oct 15, 2019

A list on [N911TL, cancelled Oct 15, 2019](https://openairdocs.org/deregistered/N911TL-2019-10-15.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 · 57 reports

- [SDR HEEA110760](https://openairdocs.org/sdr/HEEA110760.md): Connector · contaminated · Aug 11, 2006 · N911TL · Bolkms BK117B2 · Engine Indicating System Wiring
  > FLIGHT WAS CANCELLED AFTER TAKEOFF DUE TO TORQUE GAUGE READING ABOUT 20 LOW ON BOTH ENGINES. N1 AND TOT OF BOTH ENGINES SEEMED TO BE CORRECT DURING 6 MINUTE FLIGHT. MAINTENANCE CLEANED CONNECTORS TO BOTH TORQUE TRANSMITTERS. SUSPECT WATER HAD GOTTEN INTO V
- [SDR HEEA094028](https://openairdocs.org/sdr/HEEA094028.md): Window · departed · Mar 7, 2004 · N911TL · Bolkms BK117A1 · Flight Compartment Windows
  > DURING FLIGHT, COPILOT SLIDING GLASS WINDOW DEPARTED WINDOW. WINDOW CAUSED SUBSEQUENT DAMAGE TO HORIZONTAL STABLIZER AND WINGLET.
- [SDR HEEA086714](https://openairdocs.org/sdr/HEEA086714.md): Bearing · worn · May 21, 2003 · N911TL · Bolkms BK117A1 · Tail Rotor Head
  > PITCH LINK ASSY HAS WORN BEARINGS. REPLACED 2 EACH 11-3943P BEARINGS DUE TO WORN AND 2 EACH 11-6488P BEARINGS DUE TO WORN. REPAIRED.
- [SDR HEEA082652](https://openairdocs.org/sdr/HEEA082652.md): Transceiver · malfunctioned · Dec 11, 2002 · N911TL · Bolkms BK117A1 · VHF Communications System
  > VOLUME CONTROL INCONSISTENT. REPLACED S901 VOLUME CONTROL SWITCH, REPLACED BAD DISPLAY LENS, INTERMITTENT DS901 DISPLAY AND REPAINTED FACEPLATE. BENCH CHECK GOOD.
- [SDR HEEA082608](https://openairdocs.org/sdr/HEEA082608.md): Transmitter · malfunctioned · Dec 4, 2002 · N911TL · Bolkms BK117A1 · Rotor Drive Indicating System
  > AFTER LIFT OFF, TRANSMISSION OIL PRESSURE CAUTION LIGHT ILLUMINATED IN CONJUNCTION WITH LOWER THAN NORMAL READING ON NR 2 TRANSMISSION OIL PRESSURE GAUGE. REPLACED NR 2 TRANSMISSION OIL PRESSURE TRANSMITTER.
- [SDR HEEA080316](https://openairdocs.org/sdr/HEEA080316.md): Blade · worn · Jun 25, 2002 · N911TL · Bolkms BK117A1 · Tail Rotor Blades
  > TAIL ROTOR BLADE HAS WORN PAINT.
- [SDR HEEA080315](https://openairdocs.org/sdr/HEEA080315.md): Blade · worn · Jun 25, 2002 · N911TL · Bolkms BK117A1 · Tail Rotor Blades
  > TAIL ROTOR BLADE HAS WORN PAINT.
- [SDR HEEA080303](https://openairdocs.org/sdr/HEEA080303.md): Bushing · worn · Jun 11, 2002 · N911TL · Bolkms BK117A1 · Tail Rotor Gearbox
  > TAIL ROTOR GEARBOX HAS A WORN BUSHING. REPAIRED.
- [SDR HEEA079798](https://openairdocs.org/sdr/HEEA079798.md): Control Head · malfunctioned · May 30, 2002 · N911TL · Bolkms BK117A1 · Communications System
  > DISPLAYING WRONG PL CODE AND CHANGING SETTINGS INDEPENDENTLY OF MASTER CONTROL HEAD.
- [SDR HEEA079790](https://openairdocs.org/sdr/HEEA079790.md): Transceiver · inoperative · May 30, 2002 · N911TL · Bolkms BK117A1 · VHF Communications System
  > TRANSCEIVER WOULD NOT TRANSMIT.
- [SDR HEEA075662](https://openairdocs.org/sdr/HEEA075662.md): Structure · debonded · Aug 28, 2001 · N911TL · Bolkms BK117A1 · Horizontal Stabilizer Structure
  > PAINT PEELED AND TRAILING EDGE DEBONDED.
- [SDR HEEA065148](https://openairdocs.org/sdr/HEEA065148.md): Brushes · worn · Nov 15, 1999 · N911TL · Bolkms BK117B1 · Starter-Generator
  > STARTER/GENERATOR BRUSHES WORN AND INOPERATIVE.
- [SDR HEEA063440](https://openairdocs.org/sdr/HEEA063440.md): Gyro · inaccurate · Aug 9, 1999 · N911TL · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > DIRECTIONAL GYRO READING 30 - 60 DEGREES OFF.
- [SDR HEEA063436](https://openairdocs.org/sdr/HEEA063436.md): Gyro · precesses · Aug 9, 1999 · N911TL · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > DIRECTIONAL GYRO PRECESSING.
- [SDR HEEA060473](https://openairdocs.org/sdr/HEEA060473.md): Bearing · loose · Jan 25, 1999 · N911TL · Bolkms BK117B1 · Main Rotor Head
  > BEARINGS SPINNING IN HUB. REPLACED WITH SERVICEABLE BEARINGS.
- [SDR HEEA060458](https://openairdocs.org/sdr/HEEA060458.md): Horizon · malfunctioned · Jan 25, 1999 · N911TL · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > ARTIFICAL HORIZON SLOW TO PULL FLAG.
- [SDR HEEA060454](https://openairdocs.org/sdr/HEEA060454.md): Transceiver · failed · Jan 25, 1999 · N911TL · Bolkms BK117B1 · VHF Communications System
  > TRANSCEIVER WILL NOT TRANSMIT CORRECTLY.
- [SDR HEEA060444](https://openairdocs.org/sdr/HEEA060444.md): Transducer · erratic · Jan 25, 1999 · N911TL · Bolkms BK117B1 · Autopilot System
  > YAW TRANSDUCER HAS ERRATIC READING WHEN ADJUSTING.
- [SDR HEEA0016732](https://openairdocs.org/sdr/HEEA0016732.md): Actuator · leaking · Nov 6, 1998 · N911TL · Bolkms BK117B1 · Tail Rotor Control System
  > T/R ACTUATOR - LEAKING OUT SEALS.
- [SDR HEEA0016710](https://openairdocs.org/sdr/HEEA0016710.md): Gyro · failed · Nov 6, 1998 · N911TL · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > DIRECTIONAL GYRO NOT SLAVING, HEADING SYNCHRO OUTPUT PRECESSES.
- [SDR HEEA0016698](https://openairdocs.org/sdr/HEEA0016698.md): Transmitter · failed · Nov 6, 1998 · N911TL · Bolkms BK117B1 · Directional Gyro and Indicating System
  > TRANSMITER WILL NOT SLAVE.
- [SDR HEEA0015390](https://openairdocs.org/sdr/HEEA0015390.md): Indicator · stuck · Jul 29, 1998 · N911TL · Bolkms BK117B1 · Engine RPM Indicating System
  > GAUGE STICKING AT ZERO ON N1 INDICATOR WHEN POWER SHUT OFF.
- [SDR HEEA0015347](https://openairdocs.org/sdr/HEEA0015347.md): Indicator · malfunctioned · Jul 29, 1998 · N911TL · Bolkms BK117B1 · Engine RPM Indicating System
  > NR 2 N2 NEEDLE ON TRIPLE TACHOMETER FLUCTUATING AT 100 PERCENT.
- [SDR HEEA0015284](https://openairdocs.org/sdr/HEEA0015284.md): Receiver · inoperative · Jul 27, 1998 · N911TL · Bolkms BK117B1 · Automatic Direction Finder (ADF) System
  > ADF RADIO INOPERATIVE. PERFORMED PRELIMINARY INSPECTION, FOUND BLOWN FUSE. INSTALLED CIRCUIT BREAKER (1 AMP) TO TROUBLESHOOT. WHEN TURNED ON, SMOKE CAME FROM UNIT. UNIT OPERATION WAS FAULTY.
- [SDR HEEA0015280](https://openairdocs.org/sdr/HEEA0015280.md): Receiver · inoperative · Jul 27, 1998 · N911TL · Bolkms BK117B1 · Automatic Direction Finder (ADF) System
  > BFO INOPERATIVE AND STRIPPED SCREW HOLE ON FRAME. PERFORMED PRELIMINARY INSPECTION AND FOUND PHOTOCELL INOPERATIVE, REPLACED PHOTOCELL, FOUND BFO INOPERATIVE AND STRIPPED SCREW HOLE ON FRAME.
- [SDR HEEA0014732](https://openairdocs.org/sdr/HEEA0014732.md): Static Inverter · failed · Jun 11, 1998 · N911TL · Bolkms BK117B1 · AC Inverter
  > A/C INVERTER INOPERATIVE.
- [SDR HEEA0014598](https://openairdocs.org/sdr/HEEA0014598.md): Gps · malfunctioned · Jun 4, 1998 · N911TL · Bolkms BK117B1 · Global Positioning System
  > GPS LOSES FIX, CASE LOOSE, BONDING TAB BROKEN.
- [SDR HEEA0014571](https://openairdocs.org/sdr/HEEA0014571.md): Power Supply · burned out · Jun 4, 1998 · N911TL · Bolkms BK117B1 · Flight Compartment Lighting
  > LIGHT SYSTEM POWER SUPPLY UNIT SMOKED.
- [SDR HEEA0014174](https://openairdocs.org/sdr/HEEA0014174.md): Gps · defective · May 12, 1998 · N911TL · Bolkms BK117B1 · Global Positioning System
  > SATELLITE SIGNALS WEAK. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT TO TAKE TOO LONG TO LOCK ON AND IS DROPPING SATELLITES.
- [SDR HEEA0014063](https://openairdocs.org/sdr/HEEA0014063.md): Cover · worn · Apr 29, 1998 · N911TL · Bolkms BK117B1 · Tail Rotor Gearbox
  > FORWARD BORE WORN FROM BEARING SPINNING. REPLACED WITH NEW COVER.
- [SDR HEEA0013985](https://openairdocs.org/sdr/HEEA0013985.md): Gps · failed · Apr 20, 1998 · N911TL · Bolkms BK117B1 · Global Positioning System
  > INTERMITTENTLY LOSING POWER AND SHUTTING DOWN. NOT AIRCRAFT WIRING. DOES SAME WHEN POWERED UP ON BENCH. FOUND UNIT TO LOCK UP AND CHANGES MODES WITHOUT PRESSING ANY KEYS.
- [SDR HEEA0013838](https://openairdocs.org/sdr/HEEA0013838.md): Gps · failed · Apr 3, 1998 · N911TL · Bolkms BK117B1 · Global Positioning System
  > GPS INOPERATIVE. FOUND UNIT NOT PICKING UP ANY SIGNALS; ALSO ENT BUTTON IS VERY INTERMITTENT.
- [SDR HEEA0013744](https://openairdocs.org/sdr/HEEA0013744.md): Static Inverter · failed · Apr 2, 1998 · N911TL · Bolkms BK117B1 · AC Inverter
  > STATIC INVERTER INOPERATIVE.
- [SDR HEEA0013579](https://openairdocs.org/sdr/HEEA0013579.md): Transceiver · intermittent · Mar 26, 1998 · N911TL · Bolkms BK117B1 · VHF Communications System
  > RECEIVES INTERMITTENT AND MIKE GAIN DEVIATION INTERMITTENT.
- [SDR HEEA0011586](https://openairdocs.org/sdr/HEEA0011586.md): Sleeve · worn · Oct 21, 1997 · N911TL · Bolkms BK117B1 · Tail Rotor Head
  > T/R BEARING SEATS WORN.
- [SDR HEEA0011449](https://openairdocs.org/sdr/HEEA0011449.md): Hub · worn · Oct 10, 1997 · N911TL · Bolkms BK117B1 · Tail Rotor Head
  > HUB BEARING SEAT WORN.
- [SDR HEEA0011237](https://openairdocs.org/sdr/HEEA0011237.md): Blade · worn · Oct 7, 1997 · N911TL · Bolkms BK117B1 · Tail Rotor Blades
  > BLADE S/N 073 LEADING EDGE WORN.
- [SDR HEEA0010506](https://openairdocs.org/sdr/HEEA0010506.md): Gyro · defective · Jul 16, 1997 · N911TL · Bolkms BK117B1 · Directional Gyro and Indicating System
  > GYRO UNIT NOISY, GROWLING, YAW CSAS KICKING.
- [SDR HEEA0010350](https://openairdocs.org/sdr/HEEA0010350.md): Emergency Power · low · Jun 26, 1997 · N911TL · Bolkms BK117B1 · DC Power Distribution System
  > EMERGENCY POWER HAS LOW POWER.
- [SDR HEEA968813](https://openairdocs.org/sdr/HEEA968813.md): Transducer · defective · Dec 31, 1996 · N911TL · Bolkms BK117B1 · Fuel Pressure Indicator
  > FUEL PRESS READING IS HIGH.
- [SDR HEEA968241](https://openairdocs.org/sdr/HEEA968241.md): Gyro · defective · Oct 11, 1996 · N911TL · Bolkms BK117B1 · Attitude Gyro and Indicating System
  > FLAG PULLS BUT VERY SLOW TO ERECT 45 DEGREE/15 MINUTES.
- [SDR HEEA968240](https://openairdocs.org/sdr/HEEA968240.md): Actuator · leaking · Oct 11, 1996 · N911TL · Bolkms BK117B1 · Tail Rotor System
  > T/R ACTUATOR LEAKING EVERYWHERE.
- [SDR HEEA967733](https://openairdocs.org/sdr/HEEA967733.md): Altimeter · erratic · Aug 30, 1996 · N911TL · Bolkms BK117B1 · Ground Proximity System
  > NEEDLE FLUCTUATES ERRATICALLY. TEST FUNCTION SOMETIMES PEGS NEEDLE ABOVE 3000'. FOUND POWER OUT DOES NOT MEET SPECS. STRIPLINE ASSY IS BAD.
- [SDR HEEA967567](https://openairdocs.org/sdr/HEEA967567.md): Transceiver · defective · Jul 10, 1996 · N911TL · Bolkms BK117B1 · VHF Communications System
  > MHZ, KHZ FREQUENCY, TRANSFER FREQUENCY AND CHANNEL FREQUENCY UNABLE TO CHANGE.
- [SDR HEEA967566](https://openairdocs.org/sdr/HEEA967566.md): Altimeter · erratic · Jul 10, 1996 · N911TL · Bolkms BK117B1 · Ground Proximity System
  > ERRATIC RADAR ALT. OPERATION AT ZERO AND ABOVE 2000FT. RESOLDERED ALL WIRES GOING TO STRIP LINE ASSEMBLY. REPAIRED PROBLEM. VIBRATED AND COOKED UNIT TO VERIFY NEEDLE STABILITY. REPLACED BROKEN CAPACITOR C701. REPLACED RESISTORS R518,R519,R534 AND R260 TO I
- [SDR HEEA967301](https://openairdocs.org/sdr/HEEA967301.md): Transponder · malfunction · May 31, 1996 · N911TL · Bolkms BK117B1 · ATC Transponder System
  > ATC UNABLE TO RECEIVED MODE C. FOUND LOW POWER OUT. TRIED ADJUSTING POEWR TO SPECS. REPLACED CAVITY TUBE V101. REPAIRED. ADJUSTED FREQUENCY. BENCH CHECK GOOD.
- [SDR HEEA967258](https://openairdocs.org/sdr/HEEA967258.md): Transceiver · failed · May 22, 1996 · N911TL · Bolkms BK117B1 · VHF Communications System
  > UNABLE TO RECEIVE.
- [SDR HEEA956151](https://openairdocs.org/sdr/HEEA956151.md): Transceiver · inoperative · Nov 28, 1995 · N911TL · Bolkms BK117B1 · ATC Transponder System
  > ATC REPORTING INOPERATIVE. FOUND WAFER SWITCHES (2 EACH) BROKEN. REPLACED SWITCH BOARD. REPAIRED PROBLEM. ALIGNED RECEIVER AND ADJUSTED FREQUENCY. BENCH CHECK GOOD.
- [SDR HEEA956140](https://openairdocs.org/sdr/HEEA956140.md): Skin · cracked · Nov 22, 1995 · N911TL · Bolkms BK117B1 · Rotorcraft Tail Boom
  > DURING INSPECTION FOUND TAILBOOM MOUNT CONE SKIN CRACKED AT TOP AFT ECU MOUNT. REPAIRED SKIN BY STOP DRILLING CRACKS, ADDING FILLER PATCH AND ADDING DOUBLER TO TAILBOOM MOUNT CONE SKIN AT TOP AFT ECU MOUNT AND IN ACCORDANCE WITH 337 DATED 4-28-95 FOLLOWING REP
- [SDR HEEA955543](https://openairdocs.org/sdr/HEEA955543.md): Transducer · malfunction · Aug 7, 1995 · N911TL · Bolkms BK117B1 · Fuel Quantity Sensor
  > TRANSDUCER CAUSING FUEL GAUGE NEEDLE TO STICK AT ZERO.

Next page: https://openairdocs.org/deregistered/N911TL-2019-10-15/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 = 'N911TL' AND deregistration_id = 'N911TL-2019-10-15'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N911TL-2019-10-15/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.