# N911DD: 1990 Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2018-02-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 20, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006)
- Engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020)
- Data sheets: [TCDS H3EU](https://openairdocs.org/tcds/H3EU), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (OpenAirDocs)
- Serial number: S-830
- Year built: 1990
- Type of aircraft: Rotorcraft
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: June 27, 1990
- Certificate issued: November 29, 2012
- Last registry action: January 14, 2013
- Mode S code: AC9AB1
- Owner when cancelled: [Mse Air Group Inc](https://openairdocs.org/faa-owner/MSE%20AIR%20GROUP%20INC)
- Location: Ciales, PR, RQ
- Physical address: San Juan, PR, RQ
- Owner type: Corporation
- The mark today: https://openairdocs.org/aircraft/N911DD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=911DD
- Page: https://openairdocs.org/deregistered/N911DD-2018-02-20

From the FAA registry file of October 31, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Messerschmitt-Boelkow-Blohm BO-105S: https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s.md

## Service difficulty reports (16)

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

- [SDR HEEA063447](https://openairdocs.org/sdr/HEEA063447), Aug 9, 1999: WARNING BOX. MALFUNCTIONED. RPM WARNING LIGHT COMES ON DURING FLIGHT.
- [SDR HEEA062902](https://openairdocs.org/sdr/HEEA062902), Jul 12, 1999: CONTROL UNIT. MISMARKED. THUMBWHEEL NOT CORRESPONDING TO DIGITAL READOUTS.
- [SDR 99ZZZX389](https://openairdocs.org/sdr/99ZZZX389), Dec 4, 1998: HYDRAULIC PACK. MALFUNCTIONED. CYCLIC CONTROL WOULD NOT MOVE PAST CENTER WHEN PILOT ATTEMPTED TO MOVE THE CYCLIC CONTROL TO THE LEFT AFTER MAKING A RIGHT INPUT. NO MECHANICAL ANOMALIES COULD 
- [SDR HEEA0016752](https://openairdocs.org/sdr/HEEA0016752), Nov 6, 1998: STATIC INVERTER. FAILED. STATIC INVERTER TRIPS CIRCUIT BREAKER.
- [SDR HEEA0015654](https://openairdocs.org/sdr/HEEA0015654), Aug 17, 1998: PUMP. WORN. HYDRAULIC PUMP HAS WORN BEARING TRUNNIONS.
- [SDR HEEA0015270](https://openairdocs.org/sdr/HEEA0015270), Jul 27, 1998: STARTER. FAILED. STARTER/GENERATOR WILL NOT MOTOR ENGINE OVER.
- [SDR HEEA0015150](https://openairdocs.org/sdr/HEEA0015150), Jul 1, 1998: REGULATOR. FAULTY. VOLTAGE REGULATOR WILL NOT ADJUST.
- [SDR HEEA0014710](https://openairdocs.org/sdr/HEEA0014710), Jun 10, 1998: WARNING BOX. MALFUNCTIONED. MAIN ROTOR RPM, LOW SIDE WARNING INTERMITTENTLY IN-FLIGHT.
- [SDR HEEA0014465](https://openairdocs.org/sdr/HEEA0014465), Jun 2, 1998: SERVO MOTOR. FAULTY. UNABLE TO ADJUST AND SLIP.
- [SDR HEEA0013251](https://openairdocs.org/sdr/HEEA0013251), Mar 4, 1998: INDICATOR WARN. FAILED. OIL PRESS INDICATOR HAS NO "T" OIL LIGHT INDICATION.
- [SDR HEEA0013129](https://openairdocs.org/sdr/HEEA0013129), Mar 3, 1998: BEARING. SEIZED. PUMP INOPERATIVE. BEARINGS FROZE UP CAUSING PUMP TO FAIL.
- [SDR HEEA0013128](https://openairdocs.org/sdr/HEEA0013128), Mar 3, 1998: BEARING. SEIZED. PUMP INOPERATIVE. BEARINGS FROZE UP CAUSING PUMP TO FAIL.
- [SDR HEEA0012861](https://openairdocs.org/sdr/HEEA0012861), Feb 6, 1998: WARNING BOX. FAILED. RPM WARN BOX CAUSES INTERMITTENT RPM LIGHT TO ILLUMINATE WHEN AT 100 PERCENT.
- [SDR HEEA0012345](https://openairdocs.org/sdr/HEEA0012345), Dec 11, 1997: NOZZLE. DEFECTIVE. INSPECTION REVEALED: COATING LIFTING ON NR2 NOZZLE 1ST AND 2ND STAGE TIP PATHS. INSTALLED A DALLAS AIRMOTIVE OVERHAULED NR2 NOZZLE.
- [SDR HEEA0012207](https://openairdocs.org/sdr/HEEA0012207), Dec 3, 1997: INDICATOR. FAILED. TRIPLE TACH NR2 NEEDLE INDICATES HIGH OUT OF TOLERANCE 100%.
- [SDR HEEA0010281](https://openairdocs.org/sdr/HEEA0010281), Jun 25, 1997: BLADE. CRACKED. BLADE NOSE AND NECK SHELLS CRACKED.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19981201044619I](https://openairdocs.org/incident/19981201044619I), Dec 1, 1998: Bolkms BO105S (N911DD), Lawtel, LA. The pilot reported that the cyclic control momentarily jammed while in a right bank during a landing approach. Maintenance personnel inspected the flight…

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