JASC 7820

Service difficulty reports · 248

Reports filed under 7820 · Engine Noise Suppressor, newest first.

Query with SQL
duckdb -csv -c "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 jasc_code = '7820'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR 98ZZZX4511Muffler · corrodedMUFFLER ASSY BAIL HAS CORRODED AWAY DUE TO 180 HP PER STC NR SA92NW AND LACK OF INSPECTION OF AD 68-05-01 AND OPERATOR COMPLIANCE. SUBMITTER RECOMMENDED EVERY 1,000 TIS, THE MUFFLER ASSY SHOULD BE REPLACED WITH A NEW ASSY, NOT OVERHAULED.Oct 19, 1998 · N63803 · Piper PA18150SDR 98ZZZX4767Muffler · crackedPERFORMED MUFFLER INSPECTION PER AD 98-13-10. NO CRACKS FOUND. PERFORMED PRESSURE TEST PER CESSNA SB 98-78-02 AND FOUND 1 INCH CRACK ALONG EDGE OF WELD ATTACHING FLANGE TO FORWARD END PLATES. CRACK CANNOT BE VISUALLY SEEN UNLESS MUFFLER IS REMOVED AND HELD Oct 15, 1998 · N9512L · Cessna 182SSDR CA981013003Muffler · cracked(CAN) DURING OIL CHANGE, THE OVERBOARD PIPE ON THE MUFFLER WAS FOUND LOOSE. A CRACK WAS FOUND IN THE EXHAUST PIPE BRACE AND COLLECTOR CAN JOINT RUNNING HALF WAY ROUND THE CIRCUMFERENCE, TOTALLING ABOUT 4 INCHES IN LENGTH. SUBMITTER SAYS THESE UNITS LAST ABOUSep 28, 1998 · Cessna 172LSDR 98ZZZX4123Muffler · crackedWHILE PERFORMING THE AIRCRAFT'S FIRST ANNUAL INSPECTION, THE MUFFLER END FLANGE (ONE OF THEM) WAS FOUND TO HAVE A CRACK ALONG THE WELD EMANATING ABOUT ONE-THIRD OF THE CIRCUMFERENCE OF THE FLANGE. THE MUFFLER WAS REPLACED WITH A NEW UNIT. PART ONLY HAD 207 HSep 10, 1998 · N992CP · Cessna 172RSDR 98ZZZX3575Muffler · crackedACOUSTICAL MUFFLER DEVELOPED A CRACK DUE TO POSSIBLE EXCESSIVE VIBRATION. RECOMMENDATION TO PREVENT RECURRENCE IS TO SHOCK MOUNT THE COMPONENT.Sep 8, 1998 · N79RP · Gulstm GIVSDR 98ZZZX3081Muffler · separatedTHE RIGHT HAND MUFFLER OUTLET AND PERFORATED INTERNAL BAFFLE IS FOUND COMPLETELY SEPARATED FROM THE MUFFLER AFT END PLATE. MUFFLER WAS MOUNTED ON AIRCRAFT WITH VERY LOW TT, 203.9 HRS, AND EVIDENCE INDICATES FAILURE HAD OCCURRED MANY HOURS PREVIOUSLY. INSTALLJul 22, 1998 · N3104M · Maule MX7180SDR 98ZZZX3022Muffler · brokenDURING OIL CHANGE, FOUND RT MUFFLER FLANGE BROKEN OUT AROUND WELDED AREA. CANNOT DETERMINE IF MANUFACTURER OF MUFFLER IS AT FAULT WITH A BAD WELD.Jul 21, 1998 · N95242 · Cessna 182SSDR AU980807Muffler · separated(AUS) MUFFLER EXHAUST OUTLET PIPE SEPARATED FROM THE MUFFLER.Jul 18, 1998 · Piper PA32260SDR CA980629013Silencer · cracked(CAN) DURING PRE-FLIGHT, THE PILOT NOTICED A PIECE OF METAL HANGING FROM THE NR 2 EXHAUST SILENCER. THE NR 2 SILENCER WAS REMOVED AND NO DEFECTS WERE FOUND. THE NR 1 EXHAUST SILENCER WAS REMOVED AND INSPECTION FOUND A LARGE PIECE OF THE INTERNAL BAFFLE HAD BJun 22, 1998SDR 98ZZZX2230Muffler · failedTHE MUFFLER WAS OBTAINED FROM THE MANUFACTURER IN JUNE, 1996. IT WAS INSTALLED ON THE AIRCRAFT JUNE 5, 1996. MAY 30, 1998, AT ANNUAL INSPECTION, THIS MUFFLER WAS FOUND TO HAVE ONE OF THE INTERNAL CONES MORE THAN 50 PERCENT BURNED OUT. THE CALENDAR TIME WAS Jun 2, 1998 · N33DM · Cessna 182LSDR AU980817Muffler · cracked(AUS) LEFT MUFFLER CRACKED AND SECTION MISSING FROM AREA LOCATED BEHIND THE CARBURETOR HEATING PLATE.May 17, 1998SDR 98ZZZX2174Muffler · crackedNEW MUFFLER ASSY CRACKED ADJACENT TO WELD COMPLETELY AROUND TAILPIPE ALLOWING IT TO SEPARATE FROM MUFFLER.Apr 24, 1998 · N9438G · Cessna A188BSDR CA980507003Muffler · cracked(CAN) TOP INBOARD SEAM CRACKED. THIS SEAM IS VERY HARD TO SEE SINCE IT IS HIDDEN BY THE OVERBOARD EXHAUST STACK AND THE OVERLAPPING PLATE. ONLY TWO .250 INCH HOLES TO INSPECT THIS PORTION OF THE SEAM. REPLACED.Apr 22, 1998 · Cessna 172LSDR 98ZZZX1105Muffler · failedDURING ANNUAL INSPECTION, ENGINE FOUND RUNNING RICH AND WOULD NOT DEVELOP FULL POWER. TROUBLESHOOTING REVEALED MUFFLER TAILPIPE 50 PERCENT BLOCKED BY FAILED BLAST TUBE. MUFFLER WAS REMOVED,Feb 23, 1998 · N2558M · Piper PA28181SDR AU980414Pipe · bulged(AUS) ENGINE EXHAUST PIPES (BOTH ENGINES) HAVE SEVERE BULGING. THREE OF THE FOUR PIPES HAVE IMPROPER PREVIOUS REPAIRS.Feb 18, 1998 · Beech 58SDR 98ZZZX955Muffler · crackedDURING ANNUAL INPSECTION, THE CENTER MUFFLER WAS FOUND CRACKED ONE-QUARTER AROUND IN THE WELD UNDER REINFORCEMENT PLATE. IT APPEARS THE WELD DID NOT PENETRATE THE TAILPIPE COMPLETELY.Feb 1, 1998 · N47684 · Piper PA32R300SDR 98ZZZX39Muffler · crackedRIGHT MUFFLER FAILED CAUSING CARBON MONOXIDE TO ENTER CABIN. PILOT BECAME INCAPACITATED. AIRCRAFT FLEW FOR 1.9 HOURS UNTIL FUEL EXHAUSTION, LANDED IN HAYFIELD. PILOT RECEIVED MINOR INJURIES. AIRCRAFT WAS DESTROYED. ACCIDENT NR CHI 98LA055.Dec 6, 1997 · N8452P · Piper PA24400SDR AU971498Muffler · cracked(AUS) MUFFLER BAFFLE COLLAPSED INTERNALLY CAUSING PARTIAL BLOCKING OF THE MUFFLER OUTLET.Nov 10, 1997 · Piper PA28161SDR 97ZZZX4751Muffler · crackedBOTH MUFFLERS WERE FOUND CRACKED AT RISERS AND BAFFLES WERE COLLAPSED AND HAD BEEN FOR SOME TIME. THIS WOULD NOT ALLOW ENGINE TO DEVELOP FULL POWER. FOUND DURING ANNUAL INSPECTION.Oct 18, 1997 · N2642L · Cessna 172HSDR 97ZZZX4750Muffler · crackedBOTH MUFFLERS WERE FOUND CRACKED AT RISERS AND BAFFLES WERE COLLAPSED AND HAD BEEN FOR SOME TIME. THIS WOULD NOT ALLOW ENGINE TO DEVELOP FULL POWER. FOUND DURING ANNUAL INSPECTION.Oct 18, 1997 · N2642L · Cessna 172HSDR P5CA9701569Exhaust Cone · crackedCRACKED NR 2 ENGINE EXHAUST PLUG END CAP. WELD REPAIRED PER BAC MM 78-11-04 AND INSPECTED PER BAC SOPM 20-20-02.Sep 15, 1997 · N856FT · Boeing 747132SDR 97ZZZX3483Muffler · crackedINSPECTION FOUND MUFFLER CRACKED. WELDED WITH STAINLESS STEEL.Jul 22, 1997 · N3390N · Piper J3C65SDR 97ZZZX3389Muffler · crackedDURING ANNUAL INSPECTION, RIGHT EXHAUST MUFFLER WAS PRESSURIZED AND FOUND CRACKED AT TAIL PIPE OUTLET. A LARGE QUANTITY OF SOOT (EXHAUST GAS RESIDUE) WAS SEEN FLOWING OUT OF THE CRACK AND INTO THE DUCTING TO THE CABIN HEAT SYSTEM. THIS DEFECT HAD BEEN LEAKINJul 17, 1997 · N779GA · Gulstm GA7SDR AU970562Muffler · distorted(AUS) REAR MUFFLER BAFFLE DISTORTED AND PARTIALLY BLOCKING OUTLETMay 17, 1997 · Piper PA38112SDR 97ZZZX3159Muffler · failedFOLLOWING A REPORT THAT AIRCRAFT SOUNDED 'FUNNY' DURING APPROACH, INSPECTION FOUND EXHAUST FLAME TUBE FAILED AND WAS BLOCKING MUFFLER OUTLET. AIRCRAFT USED FOR FLIGHT SCHOOL RENTAL.Apr 24, 1997 · N8234D · Piper PA28161SDR 97ZZZX1144Muffler · brokenFOUND ON ANNUAL INSPECTION, FLAME TUBES BROKEN LOOSE INSIDE OF THE MUFFLER AND SEVERAL PIECES BLOCKING SOME OF THE EXHAUST STACK OPENING.Mar 4, 1997 · N8561V · Robsin R22ALPHASDR 97ZZZX1082Muffler · brokenMUFFLER REMOVED TO FACILITATE OTHER MAINTENANCE. UPON REMOVAL, A VISUAL INSPECTION REVEALED A BAFFLE CONE WAS BROKEN AND A LARGE PORTION OF THE BAFFLE WAS MISSING. SUBMITTER RECOMMENDED 100-HOUR INSPECTION INCLUDE THE USE OF A STRONG FLASHLIGHT AND A MIRROR Feb 26, 1997 · N7239E · Cessna A185FSDR 96ZZZX5134Muffler · cone missingON AN ANNUAL INSPECTION, FOUND CONE BAFFLE 'INTERNAL PART MISSING' ON LT MUFFLER. THIS UNIT WAS OVERHAULED AT 230 HOURS PREVIOUSLY AND WAS INSTALLATED 2 YEARS PREV ANNUAL.Sep 11, 1996 · N206PB · Cessna U206GSDR AU960886Diffuser · broken(AUS) MUFFLER FORWARD DIFFUSER CRACKED AND SEPARATED FROM MUFFLER BODYJun 19, 1996SDR AU960885Diffuser · cracked(AUS) MUFFLER FORWARD DIFFUSER CRACKED RADIALLY FROM DIFFUSER HOLEJun 19, 1996SDR AU960883Diffuser · cracked(AUS) MUFFLER FORWARD INLET DIFFUSER CRACKED AND SEPARATED FROM MUFFLER BODYJun 19, 1996SDR AU960727Muffler · failed(AUS) RH EXHAUST MUFFLER ASSEMBLY FAILED AT FORWARD END IN AREA OF INLET PIPE TO END PLATE WELDED JOINTMay 28, 1996SDR AU960667Muffler · separated(AUS) ENGINE EXHAUST SYSTEM MUFFLER SEPARATED FROM NO4 CYLINDER SUPPORT AND EXHAUST PIPE AT THE WELDED JOINT BETWEEN MUFFLER AND PIPE -MUFFLER WAS RETAINED BY NO2 CYLINDER PIPE AND THE FIREWALL SHOCK MOUNTMay 20, 1996SDR 96ZZZX2132Hush Kit · damagedMNMG/MSLP - FLT 049 - DURING CRUISE, NR 2 FIRE WARNING CAME ON, WHEN THROTTLE RETARDED, WARNING WENT OUT. PROCEEDED WITH PRECAUTIONARY SHUT-DOWN OF ENGINE. ON VISUAL INSPECTION OF ENGINE, FOUND LOWER SECTION OF HUSH KIT DAMAGED. CONTINUED TO INSPECT FIRE WAApr 9, 1996 · N707HE · Boeing 707330CSDR AU960872Muffler · failed(AUS) ENGINE TAIL PIPE SEPARATED FROM MUFFLER - THIS DEFECT WAS RECEIVED FROM THE AUF AND IS FOR INFORMATION ONLYMar 31, 1996SDR 96ZZZX1512Muffler · defectiveFRONT MUFFLER INTERNAL BAFFLE MISSING. AFT MUFFLER INTERNAL BAFFLE DISTORTED, PARTIALLY BLOCKING OUTLET.Mar 12, 1996 · N2247M · Piper PA28R201SDR 96ZZZX1780Muffler · crackedUPON ANNUAL INSPECTION, REMOVAL OF EXHAUST SHROUD FOUND MUFFLER CRACKED AT POINT WHERE SHROUD CHAFED MUFFLER. YEAR AFTER YEAR OF REMOVAL AND REINSTALLATION OF SHROUD TO MUFFLERS FINALLY WORE MUFFLER MATERIAL THIN ENOUGH TO CRACK AND LEAK. SUBMITTER SUGGESTS Feb 7, 1996 · N32103 · Piper PA28180SDR AU960063Muffler · cracked(AUS) ENGINE MUFFLER TO OVERBOARD PIPE WELDED JOINT CRACKED - SCORCHINGOF LOWER COWL IN AREA OF CRACK - A NEW EXHAUST MUFFLER HAD BEENFITTED AT THE LAST PERIODIC INSPECTION 8 HOURS PREVIOUS - SUSPECT PIPE CONTACTED COWL IN AREA OF CUTOUT - PERSONNEL/MAINTENANCJan 22, 1996 · Cessna 185BSDR 96ZZZX692Muffler · fracturedMUFFLER HOUSING (SHELL) FRACTURED ALLOWING EXHAUST INTO AFT SECTION OF ENGINE NACELLE CAUSING CORROSION AND HOT SPOTS. SUBMITTER STATED THIS DEFECT HAS THE POTENTIAL TO CAUSE A FIRE IN THE WING OR FAILURE DUE TO CORROSION ALSO. SUBMITTER STATED THERE IS NO RENov 29, 1995 · N1052Q · Cessna 310HSDR 95ZZZX7026Muffler · failedPILOT REPORTED SUDDEN ENGINE ROUGHNESS AND POWER LOSS. UNABLE TO MAINTAIN ALTITUDE, AN UNEVENTFUL ON-AIRPORT LANDING WAS MADE. INSPECTION REVEALED HEATER/MUFFLER HAD BEEN REPAIRED, BUT INSTEAD OF A 'FLAME CONE' BEING WELDED IN, A FLAME TUBE WITH SOLID END PLNov 29, 1995 · N9046S · Beech 3533SDR P5CA9500786Cascade Vane · corrodedNR 3 ENGINE, INBOARD NR 15 AND 17 CASCADE VANE CORRODED. BLENDED OUT CORROSION PER BOEING SRM 51-10-01.Sep 22, 1995 · N853FT · Boeing 747122SDR P5CA9500785Cascade Vane · corrodedNR 3 ENGINE, OUTBOARD NR 7 AND NR 8 CASCADE VANES CORRODED. REMOVED CORROSION PER BOEING SRM 51-10-01.Sep 22, 1995 · N853FT · Boeing 747122SDR P5CA9500784Cascade Vane · corrodedNR 3 ENGINE OUTBOARD NR 5 CASCADE VANE HAS CORROSION AND BROKEN VANE. BLENDED BROKEN VANE AND CORRODED SURFACE PER BOEING SRM 51-10-01.Sep 22, 1995 · N853FT · Boeing 747122SDR CA951018201Muffler · failed(CAN)THE PILOT WAS EXPERIENCING ENGINE DEGRADATION AND DECIDED TO LAND. THE AME WITH A PILOTS LICENCE, ARRIVED & INSPECTED THE AIRCRAFT AND HE DECIDED TO PROCEED BASE. WHILE IN CRUISE HE EXPERIENCED LOWER THAN NORMAL ENGINE RPM. UPON ARRIVAL AT BASE THE INSPESep 3, 1995 · Piper PA28140SDR 95ZZZX5944Muffler · chafedTHE MUFFLER TAILPIPE IS CHAFING ON THE FIREWALL. A WEAR SPOT WAS FOUND ON INSPECTION. THE ENGINE WAS GROUND RUN AT OPERATING TEMPERATURE WHICH CAUSED THE MUFFLER TAILPIPE TO EXPAND UP TO 13 MM CAUSING IT TO TOUCH FIREWALL AT FRAME NR 1. SUBMITTER RECOMMENDS Sep 1, 1995 · N3154Z · Slnsby T67M260SDR 95ZZZX5943Muffler · chafedTHE MUFFLER TAILPIPE IS CHAFING ON THE FIREWALL. A WEAR SPOT WAS FOUND ON INSPECTION. THE ENGINE WAS GROUND RUN AT AN OPERATING TEMPERATURE WHICH CAUSED THE MUFFLER TAILPIPE TO EXPAND UP TO 13 MM CAUSING IT TO TOUCH FIREWALL AT FRAME NR 1. SUBMITTER RECOMMESep 1, 1995 · N3004H · Slnsby T67M260SDR 95ZZZX3808Muffler · crackedEND FLANGE CRACKED TWO-THIRDS OF THE WAY AROUND, 45 HOURS TOTAL TIME. AD 83-14-04 HAD BEEN DONE REGULARLY EACH 50 HOURS. MUFFLER WHICH THIS REPLACED 45 HOURS AGO HAD THE FLANGE OBLITERATED. TOTAL TIME ON THAT MUFFLER COULD NOT BE DETERMINED, BUT IT WAS NOT Jun 27, 1995 · N5252V · Cessna 172RGSDR 95ZZZX3261Muffler · shroud failedSHROUD MISSING FROM EXHAUST SYSTEM MUFFLER WHICH CAUSED MUFFLER TO HEAT UP ENOUGH TO BURN A HOLE IN IT. BURNED UP INTAKE AIR FILTER WHICH WAS INDUCED INTO ENGINE CAUSING ENGINE FAILURE.Jun 13, 1995 · N4916Q · Cessna A188B
Back to JASC 7820