# Service difficulty reports: N137MH

A list on [N137MH](https://openairdocs.org/aircraft/N137MH.md).

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

- [SDR 2018F00043](https://openairdocs.org/sdr/2018F00043.md): Hmu · cracked · Dec 4, 2017 · N137MH · Urocop EC135P1 · Fuel Controlling System
  > A LEAK WAS FOUND ON THE #1 ENGINE HMU DURING POST MAINTENANCE GROUND RUNS. IT WAS DETERMINED TO HAVE A SUSPECTED CRACK OR LEAKING FROM THE SPLIT LINE OF THE HMU. THE AREA WAS TOO CONGESTED TO VISUALLY SEE A CRACK OR WHERE THE LEAK WAS COMING FROM. REMOVED AND
- [SDR HDNA201603250091](https://openairdocs.org/sdr/HDNA201603250091.md): Frame · cracked · Mar 18, 2016 · N137MH · Urocop EC135P1 · Rotorcraft Tail Boom
  > FOUND A CRACK AT RING FRAME X9227, DURING MAINTENANCE.
- [SDR BAQA094312](https://openairdocs.org/sdr/BAQA094312.md): Drive Shaft · damaged · May 4, 2004 · N137MH · Urocop EC135P1 · Air Conditioning System
  > FLEX SHAFT DAMAGED IN CENTER SECTION. UNIT IS ORGINIAL EQUIPMENT. HARDCARD ENCLOSED. REPLACED WITH SERVICABLE UNIT. 05/10/2004
- [SDR BAQA094235](https://openairdocs.org/sdr/BAQA094235.md): Starter Gen · inoperative · Mar 20, 2004 · N137MH · Urocop EC135P1 · Starter-Generator
  > STARTER GEN WILL NOT ROTATE ENGINE, BRUSHES ARE WORN. REPLACED WITH SERVICABLE UNIT. 04/22/2004
- [SDR BAQA093828](https://openairdocs.org/sdr/BAQA093828.md): Starter Gen · inoperative · Feb 17, 2004 · N137MH · Urocop EC135P1 · Starter-Generator
  > STARTER GEN WOULD NOT START ENGINE. REPLACED WITH SERVICABLE UNIT.
- [SDR BAQA093658](https://openairdocs.org/sdr/BAQA093658.md): Mount · leaking · Feb 10, 2004 · N137MH · Urocop EC135P1 · Main Rotor Transmission Mount
  > WARRANTY. FLAT ON STOP, LEAKED GLYCOL. REPLACED WITH SERVICABLE UNIT. 03/26/2004
- [SDR BAQA091600](https://openairdocs.org/sdr/BAQA091600.md): Transponder · inoperative · Dec 23, 2003 · N137MH · Urocop EC135P1 · ATC Transponder System
  > TRANSPONDER IS INOPERATIVE. ATC DOES NOT PICK UP AIRCRAFT. REPLACED WITH SERVICABLE UNIT. 01/23/2004
- [SDR BAQA091670](https://openairdocs.org/sdr/BAQA091670.md): Ecu · inoperative · Nov 29, 2003 · N137MH · Urocop EC135P1 · Fuel Control/Turbine Engines
  > WARRANTY. NR 1 ENGINE WON'T START. UNIT WAS INSTALLED AT A/CTT 16.6. HARDCARDS ENCLOSED. REPLACED WITH SERVICABLE UNIT. 02/17/2004
- [SDR BAQA090582](https://openairdocs.org/sdr/BAQA090582.md): Starter Gen · malfunctioned · Oct 8, 2003 · N137MH · Urocop EC135P1 · Heads Up Display System
  > ENGINE WOULD NOT START. HARD CARD ENCLOSED. REPLACED WITH SERVICEABLE STARTER GEN.
- [SDR BAQA090581](https://openairdocs.org/sdr/BAQA090581.md): Transponder · intermittent · Oct 6, 2003 · N137MH · Urocop EC135P1 · ATC Transponder System
  > SQUAKS 1200 INTERMITTENT. NO INPUT. THIS IS THE ORIGINAL UNIT INSTALLED ON 0179/137MH (NEW AIRCRAFT). PART HAS LASTED ONLY 555.9 HOURS. DID NOT RECEIVE AIRCRAFT UNTIL 3/18/03. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA089816](https://openairdocs.org/sdr/BAQA089816.md): Master Switch · will not test · Oct 2, 2003 · N137MH · Urocop EC135P1 · Electrical Power System Wiring
  > MASTER SWITCH WOULD NOT SELF TEST OR WOULD TEST ON ITS OWN. HARD CARD ENCLOSED. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA089530](https://openairdocs.org/sdr/BAQA089530.md): Valve · malfunctioned · Oct 2, 2003 · N137MH · Urocop EC135P1 · Heating System
  > "BLEED AIR" STAYS ON, ON CAD. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA089636](https://openairdocs.org/sdr/BAQA089636.md): Seat · crushed · Sep 25, 2003 · N137MH · Urocop EC135P1 · Passenger Compartment Equipment
  > NEW EC135 AIRCRAFT. SEAT IS CRUSHED. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA089812](https://openairdocs.org/sdr/BAQA089812.md): Ejector · worn · Sep 10, 2003 · N137MH · Urocop EC135P1 · Heating System
  > EJECTOR WORN BEYOND LIMITS. REPLACED WITH SERVICABLE UNIT. 05/06/2004
- [SDR BAQA088853](https://openairdocs.org/sdr/BAQA088853.md): Indicator · intermittent · Aug 26, 2003 · N137MH · Urocop EC135P1 · Main Rotor Indicating System
  > TRIPLE TACH BOTH N2 INDICATIONS FALL OFF LINE INTERMITTENTLY. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA086412](https://openairdocs.org/sdr/BAQA086412.md): Indicator · intermittent · May 14, 2003 · N137MH · Urocop EC135P1 · Main Rotor Indicating System
  > TRIPLE TACH HAS INTERMITTENT ROTARY RPM. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA086234](https://openairdocs.org/sdr/BAQA086234.md): Mount · failed · Apr 22, 2003 · N137MH · Urocop EC135P1 · Main Rotor Transmission Mount
  > GEARBOX MOUNT HAS AN INTERNAL FAILURE. REPLACED WITH SERVICEABLE UNIT.
- [SDR BAQA085939](https://openairdocs.org/sdr/BAQA085939.md): Control Box · failed · Apr 9, 2003 · N137MH · Urocop EC135P1 · Electrical Power System Wiring
  > NR 2 AMP OVERLIMIT. INTERMITTENTLY SPIKES BEYOND SERVICEABLE LIMITS. REPLACED WITH SERVICEABLE UNIT.

## 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 = 'N137MH' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N137MH/reports

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