# Service difficulty reports: N409BK A list on [N409BK](https://openairdocs.org/aircraft/N409BK.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR HYIA20231006001](https://openairdocs.org/sdr/HYIA20231006001.md): Rib · cracked · Sep 22, 2023 · N409BK · Cessna 402C · Wing, Rib/Bulkhead > DURING MAINTENANCE A CRACK WAS DISCOVERED ON THE RIGHT HAND CLOSEOUT RIB (P/N: 5122115-56) AT R.W.S. 106.79. THIS CRACK ORIGINATES FROM A HOLE IN THE FORWARD ROW OF FASTENERS COMMON TO THE AFT MAIN LANDING GEAR TRUNNION SUPPORT PLATE AND TRAVELS FORWARD AN APP - [SDR HYIA20200921001](https://openairdocs.org/sdr/HYIA20200921001.md): Packing · leaking · Sep 18, 2020 · N409BK · Cessna 402C · Aircraft Fuel Distribution System > THE PILOT REPORTED A FUEL SMELL IN COCKPIT. MAINTENANCE INSPECTED AND FOUND THE CABIN HEATER FUEL FILTER BOWL LEAKING. REMOVED AND REPLACED THE BOWL SEAL WITH NO FURTHER DEFECTS NOTED. - [SDR HYIA20200519001](https://openairdocs.org/sdr/HYIA20200519001.md): Spar Cap · corroded · May 19, 2020 · N409BK · Cessna 402C · Vertical Stabilizer, Spar/Rib > DURING MAINTENANCE TWO SPOTS OF CORROSION WERE VISUALLY IDENTIFIED ON THE AFT LEFT HAND VERTICAL SPAR CAP (P/N: 5131007-5) OF THE VERTICAL STABILIZER. THESE SPOTS EXIST AT APPROXIMATE W.L 156.52 AND W.L. 167.52, AND HAVE A MAXIMUM DEPTH OF.033 INCHES. THIS D - [SDR HYIA20180104002](https://openairdocs.org/sdr/HYIA20180104002.md): Spar Cap · cracked · Jan 3, 2019 · N409BK · Cessna 402C · Wing Spar > A CRACK WAS IDENTIFIED AT THE LT SIDE OF LWR FWD CARRYTHROUGH SPAR CAP, IB MOST AFT FASTENER HOLE WHILE PERFORMING NDT PROCEDURE AS AMOC FOR AD2018-03-03R1. THE CRACK WAS CONFIRMED WITH BOLT HOLE EDDY CURRENT AFTER THE FASTENER WAS REMOVED. WE BELIEVE THIS S - [SDR HYIA20181031001](https://openairdocs.org/sdr/HYIA20181031001.md): Attach Fitting · corroded · Oct 31, 2018 · N409BK · Cessna 402C · Wing, Attach Fittings > DURING MAINTENANCE CORROSION WAS DISCOVERED ON THE RIGHT HAND UPPER AFT WING FITTING (P/N: 0822550-46) IN THE WHEEL WELL. THIS FITTING WILL BE REMOVED AND REPLACED WITH A NEW PART. A PICTURE HAS BEEN ATTACHED TO THIS SDR FOR FURTHER DETAILS AND CLARITY. - [SDR HYIA20181023002](https://openairdocs.org/sdr/HYIA20181023002.md): Gasket · torn · Oct 20, 2018 · N409BK · Cessna 402C · Heating System > PILOT REPORTED A FUEL SMELL WHEN TURNING ON CABIN HEAT. MAINTENANCE INSPECTED AND FOUND THE HEATER FUEL FILTER GASKET IN NEED OF REPLACEMENT, THE GASKET WAS REPLACED WITH NO FURTHER DEFECTS NOTED. - [SDR HYIA20161028001](https://openairdocs.org/sdr/HYIA20161028001.md): Spark Plug · failed · Oct 26, 2016 · N409BK · Cessna 402C · Spark Plug/Igniter > PILOT REPORTED THE LEFT ENGINE WOULD NOT DEVELOP FULL POWER, STOPPED AT 26 INCHES MAP AND VIBRATION. INSPECTION OF THE LEFT ENGINE REVEALED A PREIGNITION EVENT IN THE NR 3 CYLINDER WHICH CAUSED SIGNIFICANT DAMAGE TO THE PISTON HEAD. THE CYLINDER IS IN THE PRO - [SDR HYIA201608002011](https://openairdocs.org/sdr/HYIA201608002011.md): Exhaust Valve · damaged · Jun 23, 2016 · N409BK · Cessna 402C · Reciprocating Engine Cylinder Section > CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE. - [SDR HYIA20150529001](https://openairdocs.org/sdr/HYIA20150529001.md): Transistor · failed · May 25, 2015 · N409BK · Cessna 402C · Flight Compartment Lighting > PILOT REPORTED SMOKE COMING FROM PANEL LIGHT RESISTOR. R & R THE DIMMER ASSEMBLY FOR INSTRUMENT LIGHTS. REPLACED Q7 TRANSISTOR FOR DIMMER SWITCH IAW MM 33-10-105 & WDM 33-10-00. - [SDR HYIA20131219001](https://openairdocs.org/sdr/HYIA20131219001.md): Engine · failed · Dec 19, 2013 · N409BK · Cessna 402C · Engine (Reciprocating) > OPERATING FLIGHT 1821 ALB TO MSS RETURNED TO ALB IMMEDIATELY AFTER TAKEOFF & LANDED SAFELY WITH 3 PAX ON BOARD. PILOT NOTED DECREASING LT ENG OIL PRESS & HEARD A LOUD BANG FROM LT ENG AFTER ROTATION. LT ENG MAGNETO SEPARATED FROM ACCESSORY DRIVE & CONNECTING - [SDR HYIA20120118002](https://openairdocs.org/sdr/HYIA20120118002.md): Governor · inoperative · Jan 16, 2013 · N409BK · Cessna 402C · Propeller Governor > PILOT REPORTED THAT WHEN REDUCING POWER WHILE TRANSITIONING FROM CLIMB TO CRUISE, THE LT ENGINE PROPELLER RPM STAYED AT FULL RPM AND WOULD NOT REDUCE. THE PILOT ELECTED TO RETURN TO THE DEPARTURE AIRPORT. AFTER MX INSPECTION, THE DISCREPANCY WAS UNABLE TO BE - [SDR HYIA20121210002](https://openairdocs.org/sdr/HYIA20121210002.md): Latch · out of adjust · Dec 7, 2012 · N409BK · Cessna 402C · Emergency Exits > PILOT REPORTED THAT AFTER TAKEOFF, DURING CLIMB, EMERGENCY EXIT DOOR LOCATED ON THE RT SIDE OF THE AFT, OPENED UNCOMMANDED. SAFELY RETURNED TO THE DEPARTURE. DURING INSPECTION, DOOR LATCHES WERE FOUND TO BE OUT OF ADJUSTMENT. LATCHES WERE ADJUSTED IAW MM. - [SDR HYIA20121023001](https://openairdocs.org/sdr/HYIA20121023001.md): Doubler · cracked · Oct 23, 2012 · N409BK · Cessna 402C · Fuselage Miscellaneous Structure > DURING A ROUTINE SCHEDULED MX EVENT, A CRACK WAS DISCOVERED IN THE RT FORWARD NLG TUNNEL WEB 00DOUBLER AT FS 44.00 IN THE AREA OF THE RT NLG TRUNNION BEARING BLOCK FORWARD MOUNT HOLE LOCATIONS. DETERMINED TO BE A REMOVAL AND REPLACEMENT OF OWNER PRODUCED WEB - [SDR HYIA20140415060](https://openairdocs.org/sdr/HYIA20140415060.md): Drag Brace · cracked · May 27, 2011 · N409BK · Cessna 402C · Landing Gear Retraction/Extension System > AT SCHEDULED INSPECTION, NLG DRAG BRACE, OEM PN 5142002-5 WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE WITHIN ALLOWABLE LIMIT. THIS UNIT HAS BEEN REPAIRED IAW PROCEDURE - [SDR HYIA20140414002](https://openairdocs.org/sdr/HYIA20140414002.md): Drag Brace · cracked · Apr 14, 2011 · N409BK · Cessna 402C · Landing Gear Retraction/Extension System > AT SCHEDULED INSPECTION, NLG DRAG BRACE, PN 5142002-5, WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE BEYOND LIMIT ALLOWABLE OF MEB91-11R1. THIS UNIT HAS BEEN SCRAPPED & A - [SDR HYIA409BKCBNHT](https://openairdocs.org/sdr/HYIA409BKCBNHT.md): Switch · shorted · Dec 1, 2010 · N409BK · Cessna 402C · Heating System > CREW REPORTED, ON DESCENT, NOTICED AN ODOR AND SAW SMOKE COMING FROM CABIN HEAT SWITCH. EMERGENCY WAS DECLARED, DEACTIVATED ALL ELECTRICAL SYS AND SMOKE STOPPED. TURNED ON SELECTIVE ELECTRICAL EQUIPMENT ON TO FINISH APPROACH, LANDING WAS UNEVENTFUL. MX FOUND ## 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 = 'N409BK' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N409BK/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.