# N770CS: 1975 Cessna 421B - Status: Valid registration - Airframe: Cessna 421B (registry code 2076014, TCDS A7CE (OpenAirDocs match)) - Engine: Continental GTSIO-520-C (registry code 17035, TCDS E7CE (OpenAirDocs match)) - Serial number: 421B0877 - Year built: 1975 - Type: Fixed wing multi engine - Airworthiness: Standard, normal - Airworthiness date: February 13, 1975 - Certificate issued: January 4, 2021 - Expires: January 31, 2028 - Mode S code: AA694A - Registered owner: Flying Cpa LLC - Location: Colorado Springs, CO - Owner's area on the map: 38.8303° N, 104.8157° W: Placed by OpenAirDocs at the center of ZIP code 80903, within about a mile (OpenAirDocs) - Page: https://openairdocs.org/aircraft/N770CS 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 matched by airframe (Cessna 421B) (OpenAirDocs) - [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023 - [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023 - [AD 2018-03-03 R1](https://openairdocs.org/ad/2018-03-03-R1): Fuselage · Textron 401, 401A, 401B and 13 more. Effective May 23, 2018 - [AD 2016-17-08](https://openairdocs.org/ad/2016-17-08): Elevator Tab Control System · Textron 310, 310A, 310B and 46 more. Effective Sep 12, 2016 - [AD 2014-03-03](https://openairdocs.org/ad/2014-03-03): Placards and Markings · Cessna 310, 310A, 310B and 37 more. Effective Apr 7, 2014 - [AD 2005-20-25](https://openairdocs.org/ad/2005-20-25): Avionics bus circuit breaker switches · Cessna 401, 401A, 401B and 15 more. Effective Nov 9, 2005 - [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005 - [AD 2004-25-16 R1](https://openairdocs.org/ad/2004-25-16-R1): Fuel regulator shutoff valve · Bombardier CL-215-1A10, CL-215-6B11 (CL-215T Variant), CL-215-6B11 (CL-415 Variant) and 64 more. Effective Jun 20, 2005 - [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005 - [AD 2004-21-05](https://openairdocs.org/ad/2004-21-05): B-Seires Combustion Heaters · Bombardier CL-215-1A10, CL-215-6B11 (CL-215T Variant), CL-215-6B11 (CL-415 Variant) and 41 more. Effective Nov 19, 2004 - [AD 2001-23-17](https://openairdocs.org/ad/2001-23-17): GNS 430 units · Cessna 172, 182, 206 and 209 more. Effective Dec 28, 2001 - [AD 2000-01-16](https://openairdocs.org/ad/2000-01-16): Exhaust System · Cessna 320, 320-1, 320A and 28 more. Effective Feb 15, 2000 - [AD 98-25-02](https://openairdocs.org/ad/98-25-02): Top-mounted Antenna · Bell Helicopter Textron Canada 407, 172, 172A and 243 more. Effective Dec 22, 1998 - [AD 98-14-03](https://openairdocs.org/ad/98-14-03): Transponders · Cessna 172, 172A, 172B and 230 more. Effective Aug 16, 1998 - [AD 98-04-28](https://openairdocs.org/ad/98-04-28): AFM - Limitations Section - Icing · Cessna 310R, 335, 340A and 12 more. Effective Mar 13, 1998 - [AD 97-01-13](https://openairdocs.org/ad/97-01-13): Fuel, Oil and Hydraulic Hoses · Cessna 150, 150A, 150B and 232 more. Effective Feb 3, 1997 - [AD 96-12-22](https://openairdocs.org/ad/96-12-22): Full Flow Engine Oil Adapter · Bellanca CH-300 Pacemaker, 120, 140 and 361 more. Effective Jul 31, 1996 - [AD 92-16-18](https://openairdocs.org/ad/92-16-18): Passenger Seat Reinforcement · Cessna 401, 402, 402A and 9 more. Effective Sep 10, 1992 - [AD 90-02-13](https://openairdocs.org/ad/90-02-13): Main Landing Gear · Cessna 310, 310A, 310B and 40 more. Effective Feb 5, 1990 - [AD 87-21-02 R1](https://openairdocs.org/ad/87-21-02-R1): Fuel Filler Openings · Cessna 310D, 310E, 310F and 41 more. Effective Jun 16, 1989 - [AD 76-08-02 R2](https://openairdocs.org/ad/76-08-02-R2): Wing Tip Nose Cap · Cessna 310, 310A, 310B and 41 more. Effective Jan 31, 1983 - [AD 72-14-08 R1](https://openairdocs.org/ad/72-14-08-R1): Flexible Hose Assemblies · Cessna 310, 310A, 310B and 33 more. Effective Sep 4, 1981 - [AD 78-13-05](https://openairdocs.org/ad/78-13-05): Improperly Installed Seats · Cessna 340, 340A, 402B and 7 more. Effective Jul 5, 1978 - [AD 73-22-01](https://openairdocs.org/ad/73-22-01): Fuel In Wing Leading Edge · Cessna 340, 401, 401A and 11 more. Effective May 29, 1978 - [AD 77-09-02](https://openairdocs.org/ad/77-09-02): Windshield Inspection and Repair · Cessna 421B and 421C. Effective May 9, 1977 - [AD 76-13-07](https://openairdocs.org/ad/76-13-07): Fork Bolts · Cessna 401, 401A, 401B and 11 more. Effective Jul 7, 1976 - [AD 76-04-03](https://openairdocs.org/ad/76-04-03): ARC PA-500A Actuators · Cessna 172L, 172M, 177B and 43 more. Effective Feb 26, 1976 - [AD 74-20-01](https://openairdocs.org/ad/74-20-01): Main Landing Gear Trunnion · Cessna 310Q, 340, 402B and 2 more. Effective Sep 25, 1974 - [AD 74-08-01](https://openairdocs.org/ad/74-08-01): Autopilot Servo Actuators · Aircraft Radio Autopilot Servo Actuators, 172L, 172M and 29 more. Effective Apr 9, 1974 - [AD 73-13-08](https://openairdocs.org/ad/73-13-08): Turbochargers · Cessna 421B. Effective Jun 27, 1973 - [AD 72-11-05](https://openairdocs.org/ad/72-11-05): Auxiliary Fuel Cell Leaks · Cessna 411, 411A, 421 and 3 more. Effective Jun 2, 1972 - [AD 72-03-07](https://openairdocs.org/ad/72-03-07): Landing Gear Failure · Cessna 310, 310A, 310B and 30 more. Effective Feb 9, 1972 - [AD 72-03-04](https://openairdocs.org/ad/72-03-04): Crankcase Vent Line Ice · Cessna 421B. Effective Feb 4, 1972 - [AD 72-02-01](https://openairdocs.org/ad/72-02-01): Propeller Attachment Nuts · Cessna 411, 411A, 421 and 2 more. Effective Jan 18, 1972 Historical (superseded or no longer in force): AD 2018-03-03, AD 2016-07-24, AD 75-23-08 R5 ## ADs matched by engine (Continental GTSIO-520-C) (OpenAirDocs) - [AD 2023-05-16](https://openairdocs.org/ad/2023-05-16): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 147 more. Effective Mar 15, 2023 - [AD 2023-02-12](https://openairdocs.org/ad/2023-02-12): Engine Air Intake System · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Feb 17, 2023 - [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022 - [AD 2020-16-11](https://openairdocs.org/ad/2020-16-11): SUMMARY: Reciprocating Cylinder Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 23 more. Effective Sep 21, 2020 - [AD 2016-16-12](https://openairdocs.org/ad/2016-16-12): Cylinder assemblies · Continental Motors LTSIO-520-AE, TSIO-520-A, TSIO-520-AE and 89 more. Effective Sep 15, 2016 - [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012 - [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 190 more. Effective Jun 16, 2010 - [AD 2007-05-15](https://openairdocs.org/ad/2007-05-15): Starter adapter assembly · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 6 more. Effective Apr 16, 2007 - [AD 2004-08-10](https://openairdocs.org/ad/2004-08-10): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others). Effective May 5, 2004 - [AD 99-19-01](https://openairdocs.org/ad/99-19-01): No. 2 and No. 5 Crankshaft Inspections · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Sep 30, 1999 - [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998 - [AD 96-12-22](https://openairdocs.org/ad/96-12-22): Full Flow Engine Oil Adapter · Bellanca CH-300 Pacemaker, 120, 140 and 361 more. Effective Jul 31, 1996 - [AD 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995 - [AD 93-10-02](https://openairdocs.org/ad/93-10-02): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more. Effective Aug 12, 1993 - [AD 91-19-03](https://openairdocs.org/ad/91-19-03): Oil Filter · Continental Motors 6-285-A, 6-285-B, 6-285-BA and 169 more. Effective Sep 29, 1991 - [AD 88-03-06](https://openairdocs.org/ad/88-03-06): Oil Filter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 155 more. Effective Apr 15, 1988 - [AD 86-13-04 R3](https://openairdocs.org/ad/86-13-04-R3): Cylinder Assemblies · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 44 more. Effective Feb 24, 1988 - [AD 81-24-06](https://openairdocs.org/ad/81-24-06): Engine Driven Fuel Pumps · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 51 more. Effective Nov 23, 1981 - [AD 79-05-09](https://openairdocs.org/ad/79-05-09): Oil Pump Assembly Or Oil Pressure Relief Valve Screw And/Or Plunger · Teledyne Continental Motors 6-285-CA, GTSIO-520-C, GTSIO-520-D and 60 more. Effective Mar 12, 1979 - [AD 75-09-13](https://openairdocs.org/ad/75-09-13): Turbocharger Oil Inlet Adapter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 9 more. Effective Apr 24, 1975 - [AD 80-09-11](https://openairdocs.org/ad/80-09-11): Starter Torsional Damper/Starter Gear Shaft · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 6 more - [AD 77-13-22](https://openairdocs.org/ad/77-13-22): Crankcase Cracks · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 22 more Historical (superseded or no longer in force): AD 2023-04-08, AD 2009-24-52, AD 2009-24-51, AD 2005-20-04, AD 94-14-12 ## Information bulletins (advisory) - [SAIB CE-13-27R1](https://openairdocs.org/saib/CE-13-27R1): Flight Controls Frayed Flap Extend Cables - [SAIB AIR-21-20](https://openairdocs.org/saib/AIR-21-20): TE FLAP CONTROL SYSTEM, Flight Controls –Flap Cable Tension - [SAIB CE-14-11R1](https://openairdocs.org/saib/CE-14-11R1): Landing Gear; Nose Landing Gear Trunnions - [SAIB CE-14-19](https://openairdocs.org/saib/CE-14-19): Landing Gear; Main Landing Gear (MLG) Torque Link - [SAIB CE-14-11](https://openairdocs.org/saib/CE-14-11): Landing Gear; Nose Landing Gear Trunnions - [SAIB CE-13-22](https://openairdocs.org/saib/CE-13-22): Electrical Power System Circuit Breaker Switch - [SAIB CE-10-01](https://openairdocs.org/saib/CE-10-01): Fuel: Fuel Tank Selector Valve Systems - [SAIB CE-09-16](https://openairdocs.org/saib/CE-09-16): Landing Gear: Main Landing Gear Torque Tube - [SAIB ACE-99-06](https://openairdocs.org/saib/ACE-99-06): - [SAIB ACE-99-05](https://openairdocs.org/saib/ACE-99-05): - [SAIB NE-18-16](https://openairdocs.org/saib/NE-18-16): POWERPLANT Alternator Drive Coupling - [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant - [SAIB NE-13-15](https://openairdocs.org/saib/NE-13-15): Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers - [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection - [SAIB NE-10-09](https://openairdocs.org/saib/NE-10-09): Reciprocating Engine Power Section: Hydraulic Valve Lifters - [SAIB NE-09-08](https://openairdocs.org/saib/NE-09-08): Reciprocating Engine Cylinder Section ## 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; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20170722012089I](https://openairdocs.org/incident/20170722012089I), Jul 22, 2017: Cessna 421B (N770CS), Pensacola, FL, Minor damage. Aircraft landed and taxied off of active runway onto taxiway d. once on the taxiway, the right engine quit. Engine was restarted and the crew continued to… --- From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.