# Scaled Composites 401 - Type: Aircraft model (FAA registry) - Registry code: 056358O - Manufacturer (registry): SCALED COMPOSITES LLC - Model: 401 - Aircraft type: Fixed wing single engine - Category: Airplane - Engines: 1 ยท Turbo-fan - Seats: 1 - Weight class: Up to 12,499 lb - Certification: Not type certificated - Registered aircraft: 2 - Page: https://openairdocs.org/model/scaled-composites-401 Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. None matched. ## Registered aircraft (2) - [N401XD](https://openairdocs.org/aircraft/N401XD): [Scaled Composites LLC](https://openairdocs.org/faa-owner/SCALED%20COMPOSITES%20LLC), [Mojave, CA](https://openairdocs.org/faa-place/CA/Mojave), built 2018, S/N 001 - [N401XP](https://openairdocs.org/aircraft/N401XP): [Scaled Composites LLC](https://openairdocs.org/faa-owner/SCALED%20COMPOSITES%20LLC), [Mojave, CA](https://openairdocs.org/faa-place/CA/Mojave), built 2017, S/N 002 ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (93, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2025FA0000406](https://openairdocs.org/sdr/2025FA0000406), May 22, 2025: BELLCRANK. CRACKED. CONDUCTED A GEAR UP LANDING AT KGKY. PILOT STATED THAT THEY WERE CONDUCTING A MX FLT AFTER ACFT HAD NOT FLOWN IN OVER 20 YEARS. HAD PERFORMED MULTIPLE HIGH SPEE - [SDR XGNA2020102600008](https://openairdocs.org/sdr/XGNA2020102600008), Oct 26, 2020: INDICATION SYS. MALFUNCTIONED. ON TAKE OFF CLIMB OUT AT EDC THE PILOT OF FLIGHT GTX336 THOUGHT HE OBSERVED ERRONEOUS FUEL FLOW INDICATIONS ON THE RIGHT FUEL FLOW GAUGE. HE DID NOT DECLARE AN - [SDR CA140625006](https://openairdocs.org/sdr/CA140625006), Jun 25, 2014: FITTING. CRACKED. (CAN) WHEN COMPLETING THE SID INSPECTION PROGRAM THE LT ELEVATOR WAS REMOVED FOR INSPECTION. A TAPER PIN, PASSES THROUGH A FITTING. THE FITTING WAS FOUND CRACKE - [SDR XGN2012F00001](https://openairdocs.org/sdr/XGN2012F00001), Jun 18, 2012: ENGINE. DAMAGED. PILOT REPORTED LOSING OIL PRESSURE ON THE LEFT ENGINE IN CRUISE FLIGHT. THE ENGINE WAS SHUT DOWN IN FLIGHT TO PREVENT DAMAGE. REMOVAL OF THE OIL FILTER AND ITS - [SDR CA120524012](https://openairdocs.org/sdr/CA120524012), May 23, 2012: COTTER PIN. MISSING. (CAN) IN LEVEL CRUISE FLGHT THE LT ALTERNATOR STOPPED PRODUCING POWER. AFTER LANDING OIL WAS DISCOVERED UNDER THE LT ENGINE. THE ALTERNATOR WAS REMOVED. THE ALT - [SDR XGN2011F00000](https://openairdocs.org/sdr/XGN2011F00000), Dec 30, 2010: SPRING. BROKEN. LANDING GEAR WOULD NOT RETRACT. FOUND SAFETY SWITCH SPRING BROKEN AND LEVER ACTUATOR TEETH WORN OUT. - [SDR 2010FA0001182](https://openairdocs.org/sdr/2010FA0001182), Nov 5, 2010: SUPPORT. DETACHED. 2 OF THE 3 BOLTS ATTACHING THE UPPER HALF OF THE LT MLG SIDE BRACE SUPPORT BRACKET WERE FOUND MISSING. THE STRESS IMPOSED ON THE REMAINING BOLT CAUSED IT TO BE - [SDR CA101021004](https://openairdocs.org/sdr/CA101021004), Oct 21, 2010: FITTING. CRACKED. RT ELEVATOR END FITTING CRACKED AT TAPER PIN HOLE. FOUND DURING INSP. - [SDR CA080930006](https://openairdocs.org/sdr/CA080930006), Jul 23, 2008: WHEEL. CRACKED. (CAN) RT MAIN WHEEL ASSY BEAD AREA FOUND CRACKED. WHEEL REPLACED WITH SERVICEABLE UNIT. - [SDR YJV2009F00000](https://openairdocs.org/sdr/YJV2009F00000), Jun 27, 2008: CONNECTING ROD. BROKEN. ENGINE VIBRATING, HIGH OIL TEMP AND LOW OIL PRESSURE. POST FLIGHT FOUND NR 2 CONNECTING ROD BROKEN. (K) - [SDR CA080314013](https://openairdocs.org/sdr/CA080314013), Mar 7, 2008: ENGINE. MAKING METAL. (CAN) ON FINAL APPROACH INTO AIRPORT THE RT ENGINE MANIFOLD PRESSURE STARTED CHANGING. THE PILOT THEN NOTICED THAT THE RT OIL PRESSURE HAD DROPPED TO THE RED LI - [SDR CA070126011](https://openairdocs.org/sdr/CA070126011), Jan 18, 2007: TORQUE LINK. FAILED. (CAN) AIRCRAFT WAS DOING TOUCH AND GO`S ON THE 2ND LANDING PILOT REPORTED ABNORMAL LANDING AND NO GEAR UP INDICATION. GEAR CYCLED AND ONLY 2 OUT OF 3 INDICATOR - [SDR CA070115015](https://openairdocs.org/sdr/CA070115015), Jan 12, 2007: MOUNT. LOOSE. (CAN) DURING SCHEDULED LANDING GEAR ROUTINE INSPECTION, LANDING GEAR ACTUATOR GEARBOX MOUNTING BOLTS (3) FOUND MISSING AND REMAINING (1) BOLT FOUND SHEARED. EME - [SDR CA061023005](https://openairdocs.org/sdr/CA061023005), Oct 12, 2006: CASE. CRACKED. (CAN) THE ENGINE HAD A SMALL OIL LEAK. AFTER REMOVING THE DIP STICK ASSEMBLY, A CRACK WAS FOUND BETWEEN NR 2 AND NR 4 CYLINDERS. THE ENGINE WAS REMOVED FOR OVER - [SDR XGN2006F00014](https://openairdocs.org/sdr/XGN2006F00014), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00013](https://openairdocs.org/sdr/XGN2006F00013), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00025](https://openairdocs.org/sdr/XGN2006F00025), May 20, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00024](https://openairdocs.org/sdr/XGN2006F00024), Apr 16, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00015](https://openairdocs.org/sdr/XGN2006F00015), Mar 30, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00023](https://openairdocs.org/sdr/XGN2006F00023), Mar 16, 2006: CYLINDER. CRACKED. CYLINDR HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00022](https://openairdocs.org/sdr/XGN2006F00022), Dec 16, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2005F00007](https://openairdocs.org/sdr/XGN2005F00007), Jun 14, 2005: CYLINDER. CRACKED. THIS CYLINDER WAS IN THE NR 6 POSITION AND IS A TYPE (A) HEAD. THIS CRACKED CYLINDER HEAD WAS FOUND AT THE 50 HOUR INSPECTION. WE ARE FINDING SIGNS OF AIR LEAKA - [SDR TZR2005F00025](https://openairdocs.org/sdr/TZR2005F00025), Jun 10, 2005: CYLINDER. CRACKED. CRACK IS TYPICAL FOR THESE CYLINDERS. RT ENGINE, NR 3 CYL. (SW05200509364) (K) - [SDR XGN2006F00021](https://openairdocs.org/sdr/XGN2006F00021), May 24, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00020](https://openairdocs.org/sdr/XGN2006F00020), May 23, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00019](https://openairdocs.org/sdr/XGN2006F00019), May 20, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00062](https://openairdocs.org/sdr/XGN2006F00062), May 6, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00061](https://openairdocs.org/sdr/XGN2006F00061), May 6, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00018](https://openairdocs.org/sdr/XGN2006F00018), May 6, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00017](https://openairdocs.org/sdr/XGN2006F00017), May 6, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00059](https://openairdocs.org/sdr/XGN2006F00059), Apr 16, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR TZR2005F00019](https://openairdocs.org/sdr/TZR2005F00019), Apr 15, 2005: CYLINDER. CRACKED. CYLINDER CRACKED FROM EXHAUST VALVE TO TOP SPARK PLUG PORT. ECI CYLINDER. (SW05200507952) (K) - [SDR TZR2005F00018](https://openairdocs.org/sdr/TZR2005F00018), Apr 5, 2005: CYLINDER. CRACKED. CRACKED FROM INJECTOR TOWARD SPARK PLUG, ECI CYLINDER. (SW05200507951) (K) - [SDR XGN2006F00060](https://openairdocs.org/sdr/XGN2006F00060), Apr 3, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00066](https://openairdocs.org/sdr/XGN2006F00066), Mar 30, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00065](https://openairdocs.org/sdr/XGN2006F00065), Mar 30, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00016](https://openairdocs.org/sdr/XGN2006F00016), Mar 30, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR TZR2005F00005](https://openairdocs.org/sdr/TZR2005F00005), Mar 21, 2005: CYLINDER. CRACKED. CYLINDER CRACK FROM EXHAUST VALVE. (K) - [SDR TZR2005F00004](https://openairdocs.org/sdr/TZR2005F00004), Mar 21, 2005: CYLINDER. CRACKED. CYLINDER CRACKED FROM EXHAUST VALVE TO TOP SPARK PLUG HOLE. (K) - [SDR XGN2006F00064](https://openairdocs.org/sdr/XGN2006F00064), Mar 3, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00063](https://openairdocs.org/sdr/XGN2006F00063), Mar 3, 2005: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR TZR2005F00009](https://openairdocs.org/sdr/TZR2005F00009), Feb 22, 2005: CYLINDER. CRACKED. CYLINDER CRACKED VALVE TO VALVE. (K) - [SDR TZR2005F00006](https://openairdocs.org/sdr/TZR2005F00006), Jan 29, 2005: CYLINDER HEAD. CRACKED. CYLINDER CRACKED AT HEAD. (K) - [SDR TZR2005F00007](https://openairdocs.org/sdr/TZR2005F00007), Jan 14, 2005: CYLINDER. CRACKED. CYLINDER CRACKED FROM EXHAUST VALVE. (K) - [SDR TZR2005F00008](https://openairdocs.org/sdr/TZR2005F00008), Jan 12, 2005: CYLINDER. CRACKED. CYLINDER CRACKED AT SPARK PLUG HOLE. (K) - [SDR TZR2005F00013](https://openairdocs.org/sdr/TZR2005F00013), Jan 10, 2005: CYLINDER. DAMAGED. CYLINDER COMPRESSION BELOW MINIMUMS. (K) - [SDR TZR2005F00003](https://openairdocs.org/sdr/TZR2005F00003), Jan 3, 2005: CYLINDER. CRACKED. CYLINDER CRACK FROM EXHAUST VALVE TO SPARK PLUG. (K) - [SDR TZR2005F00002](https://openairdocs.org/sdr/TZR2005F00002), Jan 3, 2005: CYLINDER. CRACKED. CYLINDER CRACKED FROM EXHAUST VALVE TO SPARK PLUG HOLE. (K) - [SDR TZR2004F00005](https://openairdocs.org/sdr/TZR2004F00005), Mar 10, 2004: TURBOCHARGER. FAILED. PILOT REPORTED LOSS OF TURBO BOOST AND OIL PRESSURE, SHUT DOWN ENGINE AND FEATHERED PROPELLER IN FLIGHT. LANDED AIRCRAFT WITHOUT FURTHER INCIDENT. DURING POST F - [SDR TZR2004F00000](https://openairdocs.org/sdr/TZR2004F00000), Dec 23, 2003: BEARING. FAILED. AFTER INSTALLATION OF RT ENGINE, WHILE PERFORMING ENGINE FUEL SET-UP AND ADJUSTMENT OF MANIFOLD PRESSURE, THERE WAS A DECREASE IN MANIFOLD PRESSURE AND A NOTICE All 93: https://openairdocs.org/model/scaled-composites-401/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Cessna 401](https://openairdocs.org/model/cessna-401): 21 registered aircraft, registry code 207590C --- 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.