# Austro E4(11OR) - Type: Engine model (FAA registry) - Registry code: 06406 - Manufacturer (registry): AUSTRO - Model: E4(11OR) - Engine type: Rotary - Power: 160 hp - Data sheet: [TCDS E00081EN](https://openairdocs.org/tcds/E00081EN) (OpenAirDocs) - Holder: Austro Engine GmbH - Installed in: 1 registered aircraft - Page: https://openairdocs.org/engine/austro-e4-11or Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2025-02-12](https://openairdocs.org/ad/2025-02-12): Reciprocating Engine Cylinder Section; Reciprocating Engine Oil System · Austro Engine E4 and E4P. Effective Apr 1, 2025 - [AD 2024-19-10](https://openairdocs.org/ad/2024-19-10): Engine (Reciprocating) · Austro Engine E4 and E4P. Effective Oct 9, 2024 - [AD 2024-05-01](https://openairdocs.org/ad/2024-05-01): Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Mar 11, 2024 - [AD 2022-03-03](https://openairdocs.org/ad/2022-03-03): Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Feb 14, 2022 - [AD 2021-24-10](https://openairdocs.org/ad/2021-24-10): Reciprocating Engine Oil System · Austro Engine E4 and E4P. Effective Dec 27, 2021 - [AD 2021-17-01](https://openairdocs.org/ad/2021-17-01): Reciprocating Engine Oil System · Austro Engine E4 and E4P. Effective Aug 23, 2021 - [AD 2020-22-14](https://openairdocs.org/ad/2020-22-14): Reciprocating Engine Supercharger · Austro Engine E4 and E4P. Effective Dec 10, 2020 - [AD 2020-15-05](https://openairdocs.org/ad/2020-15-05): Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Aug 31, 2020 - [AD 2020-14-07](https://openairdocs.org/ad/2020-14-07): Fuel Control/Reciprocating Engines and Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Aug 25, 2020 - [AD 2014-08-10](https://openairdocs.org/ad/2014-08-10): Gate controllers · Austro Engine E4. Effective Jun 3, 2014 - [AD 2011-18-19](https://openairdocs.org/ad/2011-18-19): High-pressure (HP) fuel pumps · Austro Engine E4. Effective Oct 6, 2011 Historical (superseded or no longer in force): - [AD 2023-20-03](https://openairdocs.org/ad/2023-20-03) (historical): Reciprocating Engine Cylinder Section, Reciprocating Engine Oil System · Austro Engine E4 and E4P. Effective Dec 11, 2023 - [AD 2021-22-20](https://openairdocs.org/ad/2021-22-20) (historical): Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Nov 16, 2021 - [AD 2021-09-04](https://openairdocs.org/ad/2021-09-04) (historical): Reciprocating Engine Oil System · Austro Engine E4 and E4P. Effective May 10, 2021 - [AD 2018-18-02](https://openairdocs.org/ad/2018-18-02) (historical): Reciprocating Engine Power Section · Austro Engine E4 and E4P. Effective Nov 29, 2018 - [AD 2018-07-16](https://openairdocs.org/ad/2018-07-16) (historical): Reciprocating Engine Supercharger · Austro Engine E4 and E4P. Effective Apr 27, 2018 - [AD 2013-14-08](https://openairdocs.org/ad/2013-14-08) (historical): Waste gate controller lever · Austro Engine E4. Effective Aug 21, 2013 - [AD 2010-23-09](https://openairdocs.org/ad/2010-23-09) (historical): High pressure (HP) fuel pumps · Austro Engine E4. Effective Nov 22, 2010 ## Registered aircraft (1) - [N411WW](https://openairdocs.org/aircraft/N411WW): [Wuerker Christopher K](https://openairdocs.org/faa-owner/WUERKER%20CHRISTOPHER%20K), [Alexandria, VA](https://openairdocs.org/faa-place/VA/Alexandria), built 2011, S/N 31052 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (129, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2026FA0000678](https://openairdocs.org/sdr/2026FA0000678), Sep 2, 2026: HOSE. RUPTURED. ABOUT 10 MIN AFTER TAKEOFF AND AT ABOUT 10,000 FT MSL THE LEFT ENGINE INDUCTION HOSE P/N D67-9081-26-01 FAILED BY SPLITTING AND ALLOWING THE MANIFOLD PRESSURE T - [SDR N3XR 08 13](https://openairdocs.org/sdr/N3XR%2008%2013), Aug 4, 2026: CRANKCASE. PUNCTURED. LEFT ENGINE OIL LEAK ON TAKEOFF WITH WHITE SMOKE, CREW FEATHERED AND LANDED. DURING INSPECTION, A HOLE WAS FOUND IN THE CRANKCASE, AND ANOTHER LOCATION SHOWED A - [SDR 2026FA0000601](https://openairdocs.org/sdr/2026FA0000601), Jul 24, 2026: ECU. FAULTED. LT ENGINE ECU A AND B FAILURE ON TAKEOFF. AIRCRAFT RETURNED TO FIELD. COMPUTER CODES IDENTIFIED A BOOST PRESSURE ISSUE. - [SDR 2026FA0000575](https://openairdocs.org/sdr/2026FA0000575), Jul 9, 2026: WIRE HARNESS. CHAFED. DUAL ECU FAILURE ON LH ENGINE. EMERGENCY LANDING INTO KBMI. THE DOWNLOAD SHOWED, "PRESSURE CONTROL VALVE POWER FAILURE." WHEN GAINING ACCESS TO THE PRESSURE CON - [SDR 2026FA0000518](https://openairdocs.org/sdr/2026FA0000518), May 12, 2026: FIRE DETECTOR. FAULTED. RIGHT ENGINE FIRE ANNUNCIATION ILLUMINATED ON DESCENT INTO CMH. ANNUNCIATION ILLUMINATED AND DISAPPEARED CONTINUOUSLY. SEEMED TO SUBSIDE SOMEWHAT AT STRAIGHT AN - [SDR N3XR202603200001](https://openairdocs.org/sdr/N3XR202603200001), Mar 12, 2026: GOVERNOR. OVERSPEED. DURING THE CLIMB, THE LEFT ENGINE EXPERIENCED AN RPM OVERSPEED. THE GOVERNOR WAS REPLACED. - [SDR N3XR202603020002](https://openairdocs.org/sdr/N3XR202603020002), Feb 27, 2026: GOVERNOR. INOPERATIVE. LEFT ENGINE OVERSPEED. RPM'S STARTED TO INCREASE WITH POWER BEING BROUGHT BACK TO ZERO %. - [SDR N3XR202602260001](https://openairdocs.org/sdr/N3XR202602260001), Feb 25, 2026: PULLEY. FAILED. DURING MAINTENANCE, THE CRANK PULLEY, WAS DISCOVERED FAILED. THE CENTER DISC HAD BECOME SEPARATED FROM THE OUTER PULLEY RING. THE PART WAS REPLACED WITH A NEW U - [SDR N3XR2026030201](https://openairdocs.org/sdr/N3XR2026030201), Feb 25, 2026: GOVERNOR. INOPERATIVE. LT ENG CONSTANT OVERSPEED EVEN WITH THROTTLE PULLED BACK, - [SDR 2026FA0000427](https://openairdocs.org/sdr/2026FA0000427), Dec 12, 2025: ATTACH FITTING. DEBONDED. ON ROLL OUT AFTER LANDING THE LH LANDING GEAR RETRACTED UNCOMMANDED CAUSING A PROPELLER STRIKE AND LH WING TIP TO TOUCH GROUND. UPON INVESTIGATION IT WAS DISCOV - [SDR N3XR202510300002](https://openairdocs.org/sdr/N3XR202510300002), Oct 30, 2025: DAMPENER. FAILED. DURING TROUBLESHOOTING FOR LOW POWER OUTPUT, THE TORSIONAL VIBRATION DAMPER WAS FOUND DAMAGED, WITH SEVERAL BROKEN PIECES MISSING FROM IT. IT WAS ALLOWING SLIPP - [SDR N3XR202510290001](https://openairdocs.org/sdr/N3XR202510290001), Oct 29, 2025: SEAL. FAILED. AIRCRAFT LOST POWER ON RIGHT ENGINEDURING FLIGHT AND WOULD NOT EXCEED ABOVE 40%. THE TURBO ACTUATOR FAILED. - [SDR N3XR202510070001](https://openairdocs.org/sdr/N3XR202510070001), Oct 7, 2025: PUMP. INOPERATIVE. THE RIGHT ENGINE FAILED TO START. WHEN STARTED, WITH THE FUEL PUMP ON, THE ENGINE RAN BRIEFLY. UPON TURNING THE FUEL PUMP OFF, THE ENGINE SHUT DOWN. A SUBSEQUEN - [SDR N3XR202509260003](https://openairdocs.org/sdr/N3XR202509260003), Sep 26, 2025: PUMP. INOPERATIVE. LEFT ENGINE QUIT FOR HALF A SECOND, THEN SWITCHED BACK ON, LEFT ENGINE ECU SHOWED A MESSAGE APPEARED, LEFT FUEL PUMP CIRCUIT BREAKER POPPED, KEPT THE VOTER SWIT - [SDR N3XR20250926001](https://openairdocs.org/sdr/N3XR20250926001), Sep 25, 2025: PISTON. CRACKED. DURING TAKE OFF THE LEFT ENGINE FAILED AND WAS SHUT DOWN AND FEATHERED. OIL WAS SEEN STREAMING FROM THE COWLING. A BORE SCOPE INSPECTION REVEALED THE #1 PISTON - [SDR N3XR202509250001](https://openairdocs.org/sdr/N3XR202509250001), Sep 22, 2025: PUMP. INOPERATIVE. LEFT ECU FAILURE AFTER TAKING OFF, TURNED FUEL PUMPS OFF, AND LOST ENGINE POWER. - [SDR N3XR202509250002](https://openairdocs.org/sdr/N3XR202509250002), Sep 8, 2025: PUMP. INOPERATIVE. DURING THE RUN UP, THE LEFT ECU B FAILED, AND THE ENGINE TURNED OFF. RESTARTED THE ENGINE, LEFT ECU B FAIL REMAINED. - [SDR N3XR202509250003](https://openairdocs.org/sdr/N3XR202509250003), Sep 8, 2025: PUMP. INOPERATIVE. THE RIGHT ENGINE WILL NOT START AFTER 2 ATTEMPTS. FUEL PUMP PN-D64-9028-11-01-MOD FAILED. IT WAS REPLACED - [SDR 2025FA0000584](https://openairdocs.org/sdr/2025FA0000584), Aug 21, 2025: BULB. FAILED. AIRCRAFT WAS COMING FOR LANDING ON APPROACH, GEAR WAS EXTENDED BUT NLG DOWN & LOCK INDICATION WAS NOT INDICATING. PILOTS WENT THROUGH THEIR TROUBLESHOOTING CHKL - [SDR 2025FA0000585](https://openairdocs.org/sdr/2025FA0000585), Aug 11, 2025: FUEL TANK. CRACKED. DURING ACFT ANNUAL INSPECTION, WINGS ARE REMOVED AS PART OF 1000 HR ITEMS CHECK. WING FUEL TANKS ARE REMOVED FOR INSPECTION AS PART OF 1000 HR CHECK. EACH WING - [SDR 2025FA0000413](https://openairdocs.org/sdr/2025FA0000413), Jun 20, 2025: ECU. FAULTED. PILOT REPORT: COMING BACK IN ON LIFT ARRIVAL, FELT ENGINE SHUDDER FOLLOWED BY DUAL ECU FAILURE. ECU A KEPT COMING ON AND OFF. INTERMITTENT POWER LOSS, HEADING T - [SDR N3XR202505230001](https://openairdocs.org/sdr/N3XR202505230001), May 21, 2025: PISTON. CRACKED. WHEN COMPLYING WITH AD2024-19-10 / MSB-E4-043 (RTBORESCOPE) INSPECTION, THE #2 PISTON WAS FOUND CRACKED. - [SDR N3XR20250507001](https://openairdocs.org/sdr/N3XR20250507001), May 2, 2025: PISTON. CRACKED. WHILE COMPLYING WITH AD2024-19-10 / MSB-E4-043 (RTBORESCOPE INSPECTION), THE #2 PISTON ON THE RIGHT ENGINE WAS FOUND CRACKED. THE ENGINE WAS REPLACED. - [SDR N3XR202412190001](https://openairdocs.org/sdr/N3XR202412190001), Dec 16, 2024: BRACKET. DISLODGED. DURING ECU TEST, LEFT OIL PRESSURE LOW ANNUNCIATOR DISPLAYED. OIL TEMP REMAINED IN THE GREEN AND SAME WITH RIGHT ENGINE. LEFT ENGINE OPERATING WITHOUT ANY SIGNS - [SDR 7L7R2024102100779](https://openairdocs.org/sdr/7L7R2024102100779), Oct 6, 2024: PISTON. DAMAGED. ECU A AND B FAIL DURING INITIAL CLIMB, AND SIGNIFICANT LOSS OF POWER. DURING SUBSEQUENT BORESCOPE INSPECTION FOUND A HOLE IN THE #3 PISTON. PREVIOUS BORESCOPE I - [SDR 2024FA0000750](https://openairdocs.org/sdr/2024FA0000750), Oct 3, 2024: PISTON. CRACKED. ENGINE POWER & RPM LOSS IN FLIGHT. FUMES COMING THROUGH AIR VENT. EMERGENCY LANDING INTO KHFY. FOUND #1 PISTON CRACKED. TERMINATING ACTION FOR AD2024-05-01 WAS - [SDR N3XR202409030001](https://openairdocs.org/sdr/N3XR202409030001), Aug 30, 2024: PISTON. CRACKED. DURING THE BORESCOPE INSPECTION REQUIRED BY DIAMOND MSB-E4-043/0 THE #3 PISTON WAS FOUND CRACKED. - [SDR N3XR20240903002](https://openairdocs.org/sdr/N3XR20240903002), Aug 30, 2024: PISTON. CRACKED. DURING THE BORESCOPE INSPECTION REQUIRED BY DIAMOND MSB-E4-043, THE #4 PISTON IN THE RIGHT ENGINE WAS FOUND CRACKED. - [SDR N3XR20240903003](https://openairdocs.org/sdr/N3XR20240903003), Aug 30, 2024: PISTON. CRACKED. DURING THE BORESCOPE INSPECTION REQUIRED BY DIAMOND MSB-E4-043, THE #4 PISTON IN THE RIGHT ENGINE WAS FOUND CRACKED. - [SDR N3XR20240903004](https://openairdocs.org/sdr/N3XR20240903004), Aug 30, 2024: PISTON. CRACKED. DURING THE BORESCOPE INSPECTION REQUIRED BY DIAMOND MSB-E4-043, THE #2 PISTON IN THE LEFT ENGINE WAS FOUND CRACKED. - [SDR N3XR202408290316](https://openairdocs.org/sdr/N3XR202408290316), Aug 29, 2024: PISTON. CRACKED. WHILE PERFORMING THE INSPECTION OF DIAMOND MSB-E4-043 ENGINE (BORESCOPE INSPECTION) ON THE RIGHT ENGINE, THE PISTON IN CYLINDER #1 WAS FOUND CRACKED ON THE CROW - [SDR 2024FA0000568](https://openairdocs.org/sdr/2024FA0000568), Aug 6, 2024: FLYWHEEL. FRAGMENTED. DUAL ECU FAIL AND POWER LOSS IN FLIGHT. FOUND FLYWHEEL FAILURE WHICH APPEARS TO HAVE STARTED WITH SPRING FAILURE. - [SDR 2024FA0000446](https://openairdocs.org/sdr/2024FA0000446), Jun 13, 2024: PISTON. CRACKED. PILOT REPORTED ON CLIMBING TO ALTITUDE, EXPERIENCED LOSS OF POWER APPROX, 25% AND OSCILLATION OF POWER AND RPM. STARTED TO SMELL ODD SMELL LIKE BURNING, DUAL EC - [SDR N3XR202406120001](https://openairdocs.org/sdr/N3XR202406120001), Jun 4, 2024: PISTON. CRACKED. LEFT ENGINE POWER HAD 3% & RPM(100RPM) FLUCTUATION. VISIBLE ENGINE OIL LEAKING OUT OF AIR OUTLETS. DIVERTED TO XXXX ON THE GROUND, POWER 10%FLUCTUATION RPM. INV - [SDR 2024FA0000183](https://openairdocs.org/sdr/2024FA0000183), Feb 21, 2024: ECU. FAILED. LEFT ENGINE HAS CONTINUED TO HAVE ECU FAILS RELATED TO "PROP SELF TEST FAIL". THE PROP GOV HAS BEEN REPLACED 10 TIMES IN 366HRS. EACH TIME IT IS REPLACED IT FIX - [SDR 2024FA0000141](https://openairdocs.org/sdr/2024FA0000141), Feb 9, 2024: ROD BOLT. SHEARED. UNUSUAL CLANGING SOUNDS HEARD DURING A TRAINING FLIGHT. IMMEDIATELY TURNED TO BASE AND GAINED ALTITUDE TO ASSURE SAFE LANDING AT JNX. AFTER 2 MILES, A DUAL ECU - [SDR 2024FA0000140](https://openairdocs.org/sdr/2024FA0000140), Feb 8, 2024: BOLT. SHEARED. SIGNIFICANT OIL LOSS AND LOSS OF OIL PRESSURE ON TAKEOFF. FADEC SYSTEM AUTOMATICALLY SHUT DOWN ENGINE DUE TO OIL PRESSURE LOSS. PILOT LANDED SAFELY ON RUNWAY AN - [SDR 2023FA0000854](https://openairdocs.org/sdr/2023FA0000854), Dec 22, 2023: PISTON. BROKEN. THE AIRCRAFT WAS IN CRUISE AT APPROXIMATELY 7500’ WHEN THEY EXPERIENCED SOME ENGINE ROUGHNESS, A LOSS OF OIL PRESSURE AND THE ENGINE QUIT. THEY LANDED AT THE GE - [SDR 2023FA0000767](https://openairdocs.org/sdr/2023FA0000767), Nov 18, 2023: PISTON. FAILED. PILOT REPORTED PARTIAL ENGINE POWER LOSS AND OIL LOSS. INSPECTED ENGINE AND FOUND THE #4 PISTON CRACKED/HOLE - [SDR 2023FA0000431](https://openairdocs.org/sdr/2023FA0000431), Aug 18, 2023: ENGINE. MISMANUFACTURED. PILOT REPORTED THAT THERE WAS ENGINE ROUGHNESS AND VIBRATIONS DURING TAKEOFF, NOTICED MOST AROUND 700 FEET AGL. THEY ALSO REPORTED PROP OVERSPEED. - [SDR 2023FA0000432](https://openairdocs.org/sdr/2023FA0000432), Aug 18, 2023: ENGINE. MISMANUFACTURED. PILOT REPORTED ENGINE ROUGHNESS ON TAKEOFF WITH LOAD AND RPM OSCILLATIONS. - [SDR 2023FA0000433](https://openairdocs.org/sdr/2023FA0000433), Aug 18, 2023: ENGINE. MISMANUFACTURED. ENGINE ROUGHNESS ON TAKE OFF, RPM FLUCTUATIONS, BLACK SMOKE COMING FROM EXHAUST, VIBRATIONS, AND LOUD BACKFIRING. - [SDR 2023FA0000435](https://openairdocs.org/sdr/2023FA0000435), Aug 18, 2023: ENGINE. MISMANUFACTURED. REPEATED ENGINE ROUGHNESS ISSUES - (1) ENGINE ROUGHNESS W/ OSCILLATING RPM AND VERY AGGRESSIVE JOLTING AT 75% CRUISE POWER. ANY POWER ABOVE 75% STARTING JOLTING - [SDR 2023FA0000312](https://openairdocs.org/sdr/2023FA0000312), Jun 13, 2023: CRANKCASE. LEAKING. PILOTS REPORTED A MASSIVE ENGINE OIL LEAK FROM LH ENGINE DURING FLIGHT. THEY MADE A PRECAUTIONARY LANDING AND CALLED FOR MAINTENANCE. A TECH FOUND THE HEAD OF A - [SDR N3XR20220524001](https://openairdocs.org/sdr/N3XR20220524001), May 24, 2022: GOVERNOR. STICKING. DURING ECU SELF-TEST, AN ERROR MESSAGE APPEARED SHOWING TIME OUT. INSPECTION REVEALED A MALFUNCTIONING GOVERNOR. IT WAS REPLACED AND OPERATION CHECK WAS NORMAL. - [SDR N3XR202205240002](https://openairdocs.org/sdr/N3XR202205240002), May 2, 2022: GOVERNOR. INOPERATIVE. SELF-TEST FAILURE DURING ECU SELF-TEST. REPLACED GOVERNOR. - [SDR 2022FA0000233](https://openairdocs.org/sdr/2022FA0000233), Apr 27, 2022: LANDING GEAR. DEBONDED. RIGHT MLG BRACE RIB WAS FOUND TO BE DEBONED FROM THE UPPER SHELL OF THE CENTER WING SECTION, THUS CAUSING THE GEAR ASSEMBLY TO SHIFT FROM ITS FIXED POSITION AND - [SDR 2022FA0000012](https://openairdocs.org/sdr/2022FA0000012), Jan 11, 2022: NONE. NONE. ECU B FAIL WHEN THE THROTTLE WAS BROUGHT TO FULL POWER. AFTER READING ECU CODES IT WAS DETERMINED TO BE A WASTE GATE ACTUATOR. NO POWER LOSS. NO RPM LOSS. NO CH - [SDR 7L7R2021110100001](https://openairdocs.org/sdr/7L7R2021110100001), Sep 7, 2021: GEAR. FAILED. ENGINE QUIT ON CLIMB OUT. SAFE RETURN TO AIRFIELD. FOUND TEETH MISSING ON HIGH PRESSURE FUEL PUMP AND CAMSHAFT. REPLACED THE ENGINE AND FUEL PUMP. - [SDR 2021FA0000296](https://openairdocs.org/sdr/2021FA0000296), Aug 7, 2021: WASTEGATE VALVE. NONE. LH POWER ERRATIC AT FULL THROTTLE. INSPECTED AND FOUND LH TURBO WASTE GATE CONTROLLER NOT HOLDING PRESSURE. REMOVED AND REPLACED LH WASTE GATE CONTROLLER WITH N All 129: https://openairdocs.org/engine/austro-e4-11or/reports.md --- From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.