# N211CS: Bell 206B - Status: Valid registration - Airframe: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511, 5 seats) - Engine: [Rolls-Royce 250-C20B](https://openairdocs.org/engine/rolls-royce-250-c20b) (registry code 54385) - Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW) (Bell Textron Canada Limited), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (Rolls-Royce Corporation) (OpenAirDocs) - Serial number: 2775 - Type: Rotorcraft - Engine type: Turbo-shaft - Airworthiness: Multiple - Airworthiness date: August 10, 2011 - Certificate issued: August 10, 2020 - Expires: August 31, 2027 - Mode S code: A1BD7C - Registered owner: [Withrotor Aviation Inc](https://openairdocs.org/faa-owner/WITHROTOR%20AVIATION%20INC) - Location: [Lakeview, OR](https://openairdocs.org/faa-place/OR/Lakeview) - Owner type: Corporation - Owner's area on the map: 42.3059° N, 120.3877° W: Placed by OpenAirDocs at the center of ZIP code 97630, within about 18 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=211CS - Page: https://openairdocs.org/aircraft/N211CS From the FAA registry file of October 21, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 91 in force ### Matched by airframe (Bell 206B) - [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024 - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2023-06-05](https://openairdocs.org/ad/2023-06-05): Tail Rotor Drive Shaft · Bell Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective May 19, 2023 - [AD 2022-20-04](https://openairdocs.org/ad/2022-20-04): Tail Rotor Drive Shaft · Bell Textron Canada 206, 206A, 206A-1 (OH-58A) and 6 more. Effective Dec 23, 2022 - [AD 2021-19-01](https://openairdocs.org/ad/2021-19-01): Cabin Equipment/Furnishings · Shoulder harness restraint system (Bell Helicopter Textron STC SH2073SO or SH2751SO). Effective Oct 13, 2021 - [AD 2021-15-06](https://openairdocs.org/ad/2021-15-06): Tail Rotor Drive · Bell Textron Canada 206A, 206B, 206L and 3 more. Effective Aug 27, 2021 - [AD 2021-11-01](https://openairdocs.org/ad/2021-11-01): Turbine Section · Bell Textron Canada 206B and 206L. Effective Jul 15, 2021 - [AD 2019-08-10](https://openairdocs.org/ad/2019-08-10): Main Rotor Drive System · Bell Helicopter Textron Canada 206A, 206B, 206L and 4 more. Effective Jun 24, 2019 - [AD 2018-25-17](https://openairdocs.org/ad/2018-25-17): Air Conditioning System Wiring · Airbus Helicopters 206A, 206B, 206L and 13 more. Effective Jan 22, 2019 - [AD 2017-05-04](https://openairdocs.org/ad/2017-05-04): Tension Torsion Strap · Bell Helicopter Textron Canada 206A, 206B, 206L and 3 more. Effective Mar 17, 2017 - [AD 2013-22-21](https://openairdocs.org/ad/2013-22-21): Emergency Flotation Section · Apical Industries, Inc. Emergency Float Kits (Dart Aerospace ULC STC SR01535LA). Effective Dec 13, 2013 - [AD 2013-18-06](https://openairdocs.org/ad/2013-18-06): Main Rotor Control · Bell Helicopter Textron Canada 206A, 206B, 206L and 10 more. Effective Oct 17, 2013 - [AD 2013-18-03](https://openairdocs.org/ad/2013-18-03): Ignition Power Supply · Bell Helicopter Textron Canada 206A, 206B and 206L. Effective Oct 11, 2013 - [AD 2012-12-11](https://openairdocs.org/ad/2012-12-11): Engine EFT/TOT Indicating System · Supplemental lighting system (Aviation Specialties Unlimited STC SR01383SE). Effective Jul 24, 2012 - [AD 2011-25-01](https://openairdocs.org/ad/2011-25-01): Liferafts · Agusta AB412, AB412 EP, 206A and 23 more. Effective Jan 17, 2012 - [AD 2010-26-51](https://openairdocs.org/ad/2010-26-51): Tail rotor blade · Bell Helicopter Textron Canada 206A, 206B, 206L and 10 more. Effective Mar 25, 2011 - [AD 2009-07-52](https://openairdocs.org/ad/2009-07-52): Cyclic control lever assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 7 more. Effective May 1, 2009 - [AD 2008-14-03](https://openairdocs.org/ad/2008-14-03): Tailboom attachment · Bell Helicopter Textron Canada 206A, 206B, 206L and 3 more. Effective Aug 14, 2008 - [AD 2007-25-07](https://openairdocs.org/ad/2007-25-07): Fin support · Bell Helicopter Textron Canada 206A and 206B. Effective Jan 14, 2008 - [AD 2007-23-17](https://openairdocs.org/ad/2007-23-17): Main rotor latch bolts · Bell Helicopter Textron Canada 206A and 206B. Effective Dec 6, 2007 - [AD 2007-22-01](https://openairdocs.org/ad/2007-22-01): Spindle · Bell Helicopter Textron Canada 206A and 206B. Effective Nov 6, 2007 - [AD 2007-01-06](https://openairdocs.org/ad/2007-01-06): Tail rotor blade (blade) · Bell Helicopter Textron Canada 206A, 206B, 206L and 3 more. Effective Feb 13, 2007 - [AD 2005-21-03](https://openairdocs.org/ad/2005-21-03): Tail rotor blade (blade) root doublers (doublers) · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Nov 21, 2005 - [AD 2005-16-04](https://openairdocs.org/ad/2005-16-04): High forward crosstube · Bell Helicopter Textron Canada 206A and 206B with STC SH1392SO. Effective Sep 12, 2005 - [AD 2003-13-14](https://openairdocs.org/ad/2003-13-14): Chip detector · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Aug 12, 2003 - [AD 2002-20-05](https://openairdocs.org/ad/2002-20-05): Rescue hoists · Agusta A109, A109A, A109A II and 31 more. Effective Nov 7, 2002 - [AD 81-18-01 R1](https://openairdocs.org/ad/81-18-01-R1): Trunnion · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Jan 15, 2002 - [AD 2001-02-03](https://openairdocs.org/ad/2001-02-03): Raised Forging Boss · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Mar 9, 2001 - [AD 96-06-04](https://openairdocs.org/ad/96-06-04): Driveshaft Assembly Inspection · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Apr 25, 1996 - [AD 95-24-06](https://openairdocs.org/ad/95-24-06): Rfms Changes - Autorotation · Bell Helicopter Textron Canada 206B and 206L with STC SH4169NM or 2 others. Effective Dec 27, 1995 - [AD 95-11-14](https://openairdocs.org/ad/95-11-14): Crosstubes · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 5 more. Effective Jun 30, 1995 - [AD 95-09-06](https://openairdocs.org/ad/95-09-06): Fuel Valve Switch · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Jun 8, 1995 - [AD 94-24-11](https://openairdocs.org/ad/94-24-11): Tail Rotor Drive Shaft · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Jan 6, 1995 - [AD 94-20-03](https://openairdocs.org/ad/94-20-03): Main Rotor Hub Trunnion · Bell Helicopter Textron Canada 206A, 206B, 206B-1 and 4 more. Effective Oct 11, 1994 - [AD 94-19-02](https://openairdocs.org/ad/94-19-02): Swashplate Support Assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Sep 28, 1994 - [AD 94-15-07](https://openairdocs.org/ad/94-15-07): Main Rotor Blades · Bell Helicopter Textron Canada 206A, 206B, 206L and 3 more. Effective Aug 26, 1994 - [AD 92-09-07](https://openairdocs.org/ad/92-09-07): Vertical Fin Supports · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more. Effective Jun 29, 1992 - [AD 92-06-12](https://openairdocs.org/ad/92-06-12): Transmission Failure · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Apr 13, 1992 - [AD 92-01-05](https://openairdocs.org/ad/92-01-05): Main Rotor Blades · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Feb 5, 1992 - [AD 90-13-01 R1](https://openairdocs.org/ad/90-13-01-R1): Tail Rotor Blade Assembly · Bell Helicopter Textron Canada 206B, 206L, 206L-1 and 1 more. Effective Oct 17, 1991 - [AD 90-21-03](https://openairdocs.org/ad/90-21-03): Tail Rotor Blade Assembly · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Aug 14, 1991 - [AD 91-03-12](https://openairdocs.org/ad/91-03-12): Emergency Float Bags · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Feb 28, 1991 - [AD 89-10-11 R1](https://openairdocs.org/ad/89-10-11-R1): Rfm Limitations · Bell Helicopter Textron Canada 206A and 206B. Effective Jul 31, 1989 - [AD 88-23-03](https://openairdocs.org/ad/88-23-03): Tail Rotor Yoke Assembly · Bell Helicopter Textron Canada 206A, 206B, 206B-1 and 3 more. Effective Jul 25, 1989 - [AD 78-11-02 R1](https://openairdocs.org/ad/78-11-02-R1): Rotor Blade Straps · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Dec 15, 1988 - [AD 87-10-11](https://openairdocs.org/ad/87-10-11): Main Rotor Mast Assemblies · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Aug 8, 1988 - [AD 86-24-01](https://openairdocs.org/ad/86-24-01): T/R Assembly · Bell Helicopter Textron Canada 206A, 206B and 206L. Effective Dec 15, 1986 - [AD 85-26-06](https://openairdocs.org/ad/85-26-06): Tail Rotor Blades · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 4 more. Effective Jan 31, 1986 - [AD 85-25-01](https://openairdocs.org/ad/85-25-01): Cyclic Control Stick · Bell Helicopter Textron Canada 206A, 206B, 206L and 2 more. Effective Dec 30, 1985 - [AD 80-18-04 R1](https://openairdocs.org/ad/80-18-04-R1): Main Rotor Trunnion · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Nov 24, 1980 ### Matched by engine (Rolls-Royce 250-C20B) - [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20C (T63-A-720) and 9 more. Effective Jun 28, 2022 - [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01): Turbine Governor · Rolls-Royce 250-C10 (T63-A-5), 250-C18, 250-C18A and 24 more. Effective Aug 16, 2018 - [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006 - [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06): Gas producer rotor assembly tie bolts · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 16 more. Effective Jul 26, 2006 - [AD 2005-10-13](https://openairdocs.org/ad/2005-10-13): Turbine energy absorbing ring · Rolls-Royce 250-B17B, 250-B17C, 250-B17D and 7 more. Effective Jun 22, 2005 - [AD 2004-26-09](https://openairdocs.org/ad/2004-26-09): Compressor Adaptor Couplings · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 8 more. Effective Feb 8, 2005 - [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12): Helical Torquemeter Gearshaft Assembly · Rolls-Royce 250-B17, 250-B17C, 250-B17D and 13 more. Effective Dec 19, 2001 - [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999 - [AD 96-19-01](https://openairdocs.org/ad/96-19-01): Superior Air Parts Manufacture Approval (PMA) Bearings · Rolls-Royce 250-B15G, 250-B17F, 250-B17F/1 and 17 more. Effective Sep 26, 1996 - [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989 - [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1): Slotted Third Stage Turbine Wheels · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 5 more. Effective Feb 28, 1984 - [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982 - [AD 82-13-03](https://openairdocs.org/ad/82-13-03): Modify Engine High Pressure Fuel Control Filter Assembly · Rolls-Royce 250-C20 and 250-C20B. Effective Jul 1, 1982 - [AD 79-21-01 R1](https://openairdocs.org/ad/79-21-01-R1): Third Stage Turbine Wheel Blade · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 3 more. Effective Jun 3, 1981 - [AD 78-14-08](https://openairdocs.org/ad/78-14-08): Fuel Pump Drive Spline · Rolls-Royce 250-C18, 250-C18A, 250-C18B and 3 more. Effective Oct 24, 1979 - [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977 - [AD 77-09-08](https://openairdocs.org/ad/77-09-08): Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 more. Effective Jul 18, 1977 ### Historical (superseded or no longer in force) - [AD 2021-26-08](https://openairdocs.org/ad/2021-26-08) (historical): Tail Rotor Drive Shaft · Bell Textron Canada 206, 206A, 206A-1 and 7 more. Effective Jan 27, 2022 - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2013-20-13](https://openairdocs.org/ad/2013-20-13) (historical): Turbine Section · Bell Helicopter Textron Canada 206A, 206B and 206L. Effective Dec 10, 2013 - [AD 2009-08-03](https://openairdocs.org/ad/2009-08-03) (historical): Tail rotor blade (blade) · Bell Helicopter Textron 206A, 206B, 206L and 10 more. Effective Apr 24, 2009 - [AD 2009-07-51](https://openairdocs.org/ad/2009-07-51) (historical): Lever assembly bearing · Bell Helicopter Textron 206A, 206A-1 (OH-58A), 206B and 7 more - [AD 2007-19-52](https://openairdocs.org/ad/2007-19-52) (historical): Tail rotor blade (blade) · Bell Helicopter Textron 206A, 206B, 206L and 10 more. Effective Dec 5, 2007 - [AD 2004-24-08](https://openairdocs.org/ad/2004-24-08) (historical): Tail rotor blade (blade) · Bell Helicopter Textron 206A, 206B, 206L and 3 more. Effective Dec 16, 2004 - [AD 81-18-01](https://openairdocs.org/ad/81-18-01) (historical): Main Rotor Trunnions · Bell Helicopter Textron 206A, 206A-1 (OH-58A), 206B and 3 more. Effective Sep 22, 1981 - [AD 2017-18-14](https://openairdocs.org/ad/2017-18-14) (historical): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20F and 8 more. Effective Oct 13, 2017 - [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22) (historical): Repetitive visual inspections · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 15 more. Effective Mar 9, 2015 - [AD 2012-14-06](https://openairdocs.org/ad/2012-14-06) (historical): Released turbine blades and shrouds · Rolls-Royce 250-C20, 250-C20B and 250-C20R/2. Effective Aug 14, 2012 - [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005 - [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51) (historical): Helical Torquemeter Gearshaft Assembly · 250-B17, 250-B17C, 250-B17D and 12 more All 104: https://openairdocs.org/aircraft/N211CS/ads.md ## Information bulletins (advisory) (8 in force) - [SAIB SW-18-02](https://openairdocs.org/saib/SW-18-02): Loss of Hardware Tail Rotor Drive Shaft Couplings. Issued Nov 2, 2017 - [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012 - [SAIB SW-10-42R1](https://openairdocs.org/saib/SW-10-42R1): Emergency Float Kits. Issued Aug 11, 2010 - [SAIB SW-08-42](https://openairdocs.org/saib/SW-08-42): Emergency Float with Liferaft Kits (kits). Issued Aug 27, 2008 - [SAIB SW-05-87](https://openairdocs.org/saib/SW-05-87): . Issued Sep 30, 2005 - [SAIB SW-05-25](https://openairdocs.org/saib/SW-05-25): . Issued Jan 10, 2005 - [SAIB SW-05-24](https://openairdocs.org/saib/SW-05-24): . Issued Dec 22, 2004 - [SAIB SW-04-92](https://openairdocs.org/saib/SW-04-92): . Issued Sep 30, 2004 - [SAIB SW-10-42](https://openairdocs.org/saib/SW-10-42) (historical): Emergency Float Kits. Issued Aug 5, 2010 ## NTSB investigations (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR17LA071](https://openairdocs.org/ntsb/WPR17LA071), Mar 1, 2017: Bell 206B (N211CS), Firebaugh, CA, substantial damage. Probable cause: A total loss of engine power due to fuel exhaustion. Contributing to the accident was the improper calibration of the fuel quantity gauge, which led the pilot to believe that there was adequate fuel… ## FAA accident and incident reports None matched to N211CS. ## Service difficulty reports (1) As reported by operators and repair stations. - [SDR 2016FA0000154](https://openairdocs.org/sdr/2016FA0000154), Mar 9, 2016: GOVERNOR. INOPERATIVE. EPOXY CAME LOOSE FROM END OF DRIVE SHAFT. CLIP CAME LOOSE ALLOWING DRIVE SHAFT SPLINES TO WEAR AND CAUSE UNSTABLE GOVERNOR CONTROL. ## Related - Other Bell 206B aircraft: https://openairdocs.org/model/bell-206b/aircraft.md - STCs for the Bell 206B: https://openairdocs.org/model/bell-206b/stcs.md - The Rolls-Royce 250-C20B engine: https://openairdocs.org/engine/rolls-royce-250-c20b.md --- 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.