# Service difficulty reports: Champion 7AC A list on [Champion 7AC](https://openairdocs.org/model/champion-7ac.md). Newest first. General aviation reporting is voluntary. - [SDR 2020FA0000117](https://openairdocs.org/sdr/2020FA0000117.md): Spar · damaged · Dec 22, 2019 · N85251 · Bbavia 7AC · Wing Spar > AIRCRAFT GROUND LOOPED ON LANDING AND RT WING STRUCK GROUND AT WING TIP, SEE DRAWING BELOW. CAUSED LITTLE DAMAGE TO TIP BOW 7-440 AND NO DAMAGE TO RIB S-143. UPON INSPECTION FOUND 8 CRACKS IN GROWTH RINGS GOING ALL THE WAY TO PLYWOOD DOUBLER FOR REAR SPAR ST - [SDR 2012FA0000229](https://openairdocs.org/sdr/2012FA0000229.md): Spar · damaged · Mar 15, 2012 · N1946E · Bbavia 7AC · Wing Spar > THIS REPORT IS BEING SUBMITTED IAW AD 200-25-02 R1. LT AND RT WING TIPS WERE DAMAGED DUE TO LOOSE TIE DOWN ROPES. OTBD MOST RIBS WERE REPLACED AND RT AFT SPAR WAS REPAIRED AT STA 195. - [SDR 2009FA0000822](https://openairdocs.org/sdr/2009FA0000822.md): Screen · clogged · Jun 17, 2009 · N1049W · Bbavia 7AC · Aircraft Fuel Filter/Strainer > FUEL STRAINER SCREEN IN NOSE TANK, FOUND PLUGGED UP. CAUSE UNKNOWN. AGE OF PANT ESTM: 63 YRS. - [SDR 2009FA0000821](https://openairdocs.org/sdr/2009FA0000821.md): Coil · failed · Jun 17, 2009 · N1049W · Bbavia 7AC · Magneto/Distributor > MAGNETO FAILURE DUE TO COIL. UPON INSPECTION, FOUND OIL FROM COIL, INSIDE MAGNETO. AGE OF COIL ESTM: 36 YRS. (K) - [SDR CA090108003](https://openairdocs.org/sdr/CA090108003.md): Door Frame · corroded · Dec 26, 2008 · Bbavia 7AC · Fuselage Main, Structure > (CAN) DOOR TUBE RUSTED THROUGH LOWER END, REPLACED. - [SDR 2005FA0001137](https://openairdocs.org/sdr/2005FA0001137.md): Spar · cracked · Aug 11, 2005 · N84286 · Bbavia 7AC · Wing Spar > AFT RT SPAR HAS LONGITUDINAL CRACK ON LOWER END. CRACK OCATED AT STRUT ATTACH POINT. SPAR ALSO SHOWS SIGNS OF ROTTING IB OF CRACK AREA. (K) - [SDR 2005FA0000014](https://openairdocs.org/sdr/2005FA0000014.md): Spar · cracked · Jan 21, 2005 · N2974E · Bbavia 7AC · Wing Spar > DURING PRE-PURCHASE, COMPLIED WITH INSPECTION. BOTH SPARS IN BOTH WINGS WERE FOUND TO HAVE LOOSE AND MISSING NAILS THAT HOLD RIBS OT THE SPARS. SEVERAL LONGITUDINAL CRACKS WERE FOUND. RECOMMENDATION TO OWNER WAS TO REPLACE ALL WOOD SPARS, WITH STC METAL SPA - [SDR 2005FA0000694](https://openairdocs.org/sdr/2005FA0000694.md): Rib · cracked · Nov 5, 2004 · N83258 · Bbavia 7AC · Wing, Rib/Bulkhead > THE FIRST WING RIB LOCATED IB OF THE AILERONS WAS FOUND CRACKED ALONG THE RADIUS OF THE ATTACH TAB WHERE THE RIB IS SECURED TO THE AFT SPAR. THIS AIRCRAFT WAS SUBJECTED TO YEARS OF PREVAILING WINDS QUARTERING AGAINST THE T/E OF THE LT AILERON. NO GUST LOCKS - [SDR QH52004F00000](https://openairdocs.org/sdr/QH52004F00000.md): Housing · cracked · May 14, 2004 · N3060 · Bbavia 7AC · Autopilot System > THIS PART WAS TESTED IAW MFG 65-40-03. CRACKED LOCATED AT THE OIL GALLERY. - [SDR 2004FA0000142](https://openairdocs.org/sdr/2004FA0000142.md): Spar · cracked · Jan 23, 2004 · N83899 · Bbavia 7AC · Wing Spar > AD 200-25-02-R1, INSPECTION OF WING SPARS WAS SIGNED OFF AS COMPLIANCE WITH, ON 19 AUG O1 AS A NON-REOCCURRING INSP. DURING ANNUAL INSPECTION IN JAN 04, BOTH MAIN SPARS WERE FOUND TO BE CRACKED AT THE ROOT END. - [SDR 2003FA0001157](https://openairdocs.org/sdr/2003FA0001157.md): Spar · cracked · Nov 1, 2003 · N84670 · Bbavia 7AC · Wing Spar > ANNUAL INSPECTION. PERFORMED AD2001-25-02R1. NOTED CRACK ON LEFT/AFT WING SPAR. CRACK IS ON WOOD SPAR OUTBOARD OF LIFT STRUT ATTACH POINT. AIRCRAFT TT 6517.08. SPAR ORIGIN UNKNOWN. NOTED PREVIOUS SPAR REPAIR IN DIFFERENT LOCATION DATED 1979. RECOMMEND A - [SDR BDJ2003F00001](https://openairdocs.org/sdr/BDJ2003F00001.md): Spar · cracked · Sep 29, 2003 · N2205E · Bbavia 7AC · Wing Spar > OWNER REQUESTED AN INSPECTION IAW AD2000-25-02R1 WOOD SPAR INSPECTION. INSPECTION REVEALED THAT ALL INSPECTION HOLES HAD NOT BEEN ADDED IAW SL406 REV. A. UPPER FRONT SPAR HOLES WERE CUT AND CONVERED WITH DUCT TAPE, RT FRONT SPAR HAD OPEN CRACK AT BUTT EXTEND - [SDR BDJ2003F00000](https://openairdocs.org/sdr/BDJ2003F00000.md): Spar · cracked · Sep 29, 2003 · N2205E · Bbavia 7AC · Wing Spar > OWNER REQUESTED AN INSPECTION IAW AD 2000-25-02R1, WOOD SPAR INSPECTION. INSPECTION REVEALED ADDITION INSPECTION. HOLES WERE NOT ADDED IAW LS406, REV A, RT REAR SPAR HAD AN OPEN CRACK AT THE BUTT INTO THE SPAR ATTACH PLATE BOLT HOLE, SPAR SEPARATING AT THE - [SDR CA020730005](https://openairdocs.org/sdr/CA020730005.md): Spar · cracked · Jul 16, 2002 · Bbavia 7AC · Wing Spar > (CAN) WING SPARS, RIGHT FRONT WING WITH SMALL CRACKS FROM NAIL HOLES VARIOUS LOCATIONS. RIGHT REAR SPAR WITH CRACK FROM TIP DAMAGE PREVIOUS.BOTH SPARS REPLACED. - [SDR 2002FA0000649](https://openairdocs.org/sdr/2002FA0000649.md): Spar · cracked · Apr 30, 2002 · N83851 · Bbavia 7AC · Wing Spar > LEFT WING REAR SPAR COMPRESSION CRACK AT STRUT ATTACH POINT BETWEEN DOUBLER ON UPPER SURFACE. - [SDR 2002FA0000249](https://openairdocs.org/sdr/2002FA0000249.md): Spar · cracked · Feb 1, 2002 · N83280 · Bbavia 7AC · Wing Spar > DURING INSPECTION OF AD INSPECTION. FOUND LEFT WING FORWARD SPAR CRACKED AT UNDER SIDE OF SPAR OUT BOUND OF LIFT STRUT ATTACH POINT. OWNER WAS CALLED TO INFORM HIM THIS WING WILL BE REPAIRED WITH NEW SPAR INSTALLED. - [SDR 2002FA0000055](https://openairdocs.org/sdr/2002FA0000055.md): Cylinder · leaking · Jan 14, 2002 · N85664 · Bbavia 7AC · Reciprocating Engine Cylinder Section > ENGINE WAS INSTALLED ON THE AIRCRAFT AND RUN UP. AN OIL LEAK WAS NOTICED IN THE LOWER SPARK PLUG BOSS AREA OF NR 1 CYLINDER. FURTHER EXAMINATION REVEALED THAT SOME CUTS BETWEEN FINS ADJACENT TO THE SPARK PLUG HOLE NEARLY PENETRATED THE THREAD AREA OF THE SPA - [SDR 2002FA0000054](https://openairdocs.org/sdr/2002FA0000054.md): Cylinder · cut · Jan 14, 2002 · N85664 · Bbavia 7AC · Reciprocating Engine Cylinder Section > ENGINE WAS INSTALLED ON THE AIRCRAFT AND RUN UP. AN OIL LEAK WAS NOTICED IN THE LOWER SPARK PLUG BOSS AREA OF NR 1 CYLINDER. FURTHER EXAMINATION REVEALED THAT SOME CUTS BETWEEN FINS ADJACENT TO THE SPARK PLUG HOLE NEARLY PENETRATED THE THREAD AREA OF THE SP - [SDR 2002FA0000234](https://openairdocs.org/sdr/2002FA0000234.md): Spar · cracked · Jan 8, 2002 · N82027 · Bbavia 7AC · Wing Spar > RIGHT REAR SPAR CRACKED ON TOP AT OUTBOARD END OF STRUT ATTACHMENT DUBBLER. TIP OF SPAR HAS DUBBLER PLATES. SPAR HAS BEEN DAMAGED BEFORE. - [SDR 2001FA0000390](https://openairdocs.org/sdr/2001FA0000390.md): Carburetor · inoperative · Sep 22, 2001 · N85122 · Bbavia 7AC · Fuel Control/Reciprocating Engines > ENGINE FAILURE, BELIEVE DUE TO FUEL STARVATION. GOOD FUEL FLOW UP TO CARBURETOR. NO CONTAMINATION FOUND WITH GASCOLATOR. UPON CARBURETOR DISASSEMBLY FOUND VERY FINE DIRT IN CARBURETOR FUEL STRANER AND FLOAT CHAMBER. ALSO, FOUND MAIN AIR BLEED JET NEARLY TO - [SDR 2001F00205](https://openairdocs.org/sdr/2001F00205.md): Spar · cracked · Jul 12, 2001 · N83233 · Bbavia 7AC · Wing Spar > SPAR CRACKED - [SDR 2001FA0000080](https://openairdocs.org/sdr/2001FA0000080.md): Spar · cracked · Jul 10, 2001 · N83280 · Bbavia 7AC · Wing Spar > DURING INSPECTION, FOUND LT WING FORWARD SPAR CRACKED AT UNDERSIDE OF SPAR OUT BOUND OF LIFT STRUT ATTACH POINT. THIS WING WILL BE REPAIRED WITH NEW SPAR INSTALLED. - [SDR 2001FA0000106](https://openairdocs.org/sdr/2001FA0000106.md): Spar · cracked · Jul 2, 2001 · N1703E · Bbavia 7AC · Wing Spar > FOUND A SMALL LONGITUDINAL CRACK BETWEEN THE PLYWOOD DOUBLER PLATE AT THE FORWARD LIFT STRUT ATTACH FITTING AND THE NEXT OUTBOARD RIB ALONG THE REAR FACE OF THE SPAR. WITH A MIRROR IN THE NEXT OUTBOARD RIB BAY, THE CRACK PROTRUDED ABOUT THREE INCHES. WHEN TH - [SDR 20010223CW001](https://openairdocs.org/sdr/20010223CW001.md): Spar · cracked · Jan 17, 2001 · N1205E · Bbavia 7AC · Wing Spar > DURING INSPECTION, CRACK FOUND ORIGINATING FROM RIB NAIL RUNNING HORIZONTAL. SPAR INSTALLED 5/17/59 - [SDR 2002FA0000241](https://openairdocs.org/sdr/2002FA0000241.md): Spar · cracked · Jan 3, 2001 · N83946 · Bbavia 7AC · Wing Spar > 1) RIGHT WING/ CRACKS PROPAGATING FROM BOLT HOLES ADJACENT TO FUSELAGE ATTACHMENT FROM AND REAR. 2) CRACK OUTBOARD OF REAR LIFT STRUT REAR SPAR (RIGHT WING) 3) LEFT WING REAR SPAR (ORIGINAL FACTORY SPAR) EDGE GLUED JOINT DELAMINATED FROM ATTACH FITTING OUT T - [SDR 2002FA0000240](https://openairdocs.org/sdr/2002FA0000240.md): Spar · cracked · Jan 3, 2001 · N4221E · Bbavia 7AC · Wing Spar > 1) RIGHT WING FRONT SPAR BETWEEN 3RD AND 4TH RIB ON FORWARD FACE OF SPAR A CRACK CROSSING 3 ANNUAL RINGS APPROXIMATELY 4 INCHES IN LENGTH. 2) LEFT WING LOOSE OR MISSING NAILS IN FRONT SPAR AS 3RD AND 4TH RIBS LOOSE OR MISSING NAILS IN FRONT AND REAR SPARS ADJ - [SDR 20000623SH003](https://openairdocs.org/sdr/20000623SH003.md): Wheel · cracked · Apr 1, 2000 · N84728 · Bbavia 7AC · Wheel/Ski/Float > UPON DISASSEMBLY FOR C/W AD 48-08-02, A CRACK WAS DISCOVERED IN THE BEAD RADIUS OF THE INNER WHEEL HALF, EXTENDING APPROXIMATLEY 90 DEGREES AROUND THE WHEEL. THESE WHEELS MUST BE DISASSEMBLED AND INSPECTED WITH THE TIRE REMOVED IN ORDER TO SEE THIS AREA AND - [SDR 20000417SH018](https://openairdocs.org/sdr/20000417SH018.md): Rocker · broken · Mar 17, 2000 · N84729 · Bbavia 7AC · Reciprocating Engine Cylinder Section > PILOT REPORTED A REDUCTION IN POWER. AFTER INVESTIGATING, THE ROCKER ARM HAD BROKEN AT THE CENTER. THIS IS THE OLD TYPE WHICH DOES NOT HAVE AS MUCH MATERIAL AS THE NEW TYPE. (X) - [SDR 99ZZZX2572](https://openairdocs.org/sdr/99ZZZX2572.md): Elt · inoperative · Jun 25, 1999 · N84729 · Bbavia 7AC · Emergency Equipment > DURING ANNUAL INSPECTION AND C/W FAR 91.207(D) G-TEST FAILED WHILE IN THE ARM POSITION. UNIT WAS OPENED AND SEVERAL LOOSE PARTS WERE FOUND FLOATING AROUND. AIRCRAFT TOTAL TIME: 2,382:7 HOURS. - [SDR 99ZZZX2573](https://openairdocs.org/sdr/99ZZZX2573.md): Air Filter · altered · Jun 22, 1999 · N84729 · Bbavia 7AC · Engine Air Intake System > DURING ANNUAL INSPECTION, THE ORIGINAL AIR FILTER ASSEMBLY WAS FOUND TO HAVE HAD THE GUTS REMOVED AND ALTERED TO ACCEPT A BRACKET AIR FILTER ELEMENT BA-4106 WHICH WAS CUT TO SIZE. THIS IS NOT APPROVED AND NOT SAFE. AIRCRAFT TT: 2,385.0 HOURS. - [SDR CA970319008](https://openairdocs.org/sdr/CA970319008.md): Spar · cracked · Mar 5, 1997 · Bbavia 7AC · Wing Spar > (CAN) FOUND REAR WING SPAR CRACKED AT TOP OUTER STRUT ATTACH PLATE. THE CRACK WAS ONLY VISIBLE WHEN A LOAD WAS APPLIED TO SPAR TIP. - [SDR 96ZZZX5957](https://openairdocs.org/sdr/96ZZZX5957.md): Fabric · loose · Nov 14, 1996 · N72468 · Bbavia 7AC · Wing, Plate/Skin > DURING FLIGHT, UNUSUAL NOISE WAS HEARD. IT WAS FOUND THAT FABRIC WAS LOOSE ON 1ST AND 2ND RIBS ON RT WING, AND NR 4 AND NR 8 SCREWS HAD PULLED OUT OF RIBS. SUBMITTER STATED IT IS BELIEVED THAT SCREW HOLES WERE SLIGHTLY OVERSIZE AND FABRIC WEAVE WAS FORCED IN - [SDR EY2R9601181](https://openairdocs.org/sdr/EY2R9601181.md): Propeller · corroded · Nov 1, 1996 · Bbavia 7AC · Propeller Assembly > CORROSION FOUND ON FIXED-PITCH PROPELLER. - [SDR 96ZZZX2470](https://openairdocs.org/sdr/96ZZZX2470.md): Rib · cracked · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing, Rib/Bulkhead > DISMANTLED BOTH LT AND RT WINGS FOR THE PURPOSE OF RECOVERING. IN THE PROCESS OF REMOVING OLD COVER, DETERMINED THAT ALL THE SCREWS THAT SECURE THE FABRIC TO THE RIBS FOR THE NR 2 AND NR 3 INBOARD RIBS OF EACH WING, HAD ELONGATED THE HOLES IN THE RIBS AND WAS - [SDR 96ZZZX2469](https://openairdocs.org/sdr/96ZZZX2469.md): Rib · cracked · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing, Rib/Bulkhead > DISMANTLED BOTH LT AND RT WINGS FOR THE PURPOSE OF RECOVERING. IN THE PROCESS OF REMOVING OLD COVER, DETERMINED THAT ALL THE SCREWS THAT SECURE THE FABRIC TO THE RIBS FOR THE NR 2 AND NR 3 INBOARD RIBS OF EACH WING, HAD ELONGATED THE HOLES IN THE RIBS AND WAS - [SDR 96ZZZX2467](https://openairdocs.org/sdr/96ZZZX2467.md): Fitting · cracked · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing Spar > DISMANTLED LEFT WING FOR THE PURPOSE OF RECOVERING. AS A PRECAUTION, THE WING SPAR ATTACHMENT FITTINGS WERE MAGNAFLUXED. THE LEFT REAR SPAR ATTACHMENT FITTING WAS FOUND TO HAVE SEVERAL IMPERFECTIONS IN THE WELD AREAS OF BOTH THE TOP AND BOTTOM GUSSETS. THE - [SDR 96ZZZX2387](https://openairdocs.org/sdr/96ZZZX2387.md): Fitting · cracked · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing Spar > DISMANTLED LEFT WING FOR THE PURPOSE OF RECOVERING. AS A PRECAUTION, THE WING SPAR ATTACHMENT FITTINGS WERE MAGNAFLUXED. THE LEFT FRONT WING SPAR ATTACHMENT FITTING WAS FOUND TO HAVE SEVERAL IMPERFECTIONS IN THE WELDED AREA OF BOTH THE TOP AND BOTTOM GUSSETS - [SDR 96ZZZX2386](https://openairdocs.org/sdr/96ZZZX2386.md): Spar · cracked · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing Spar > DISMANTLED BOTH LEFT AND RIGHT WINGS FOR RECOVERING. ALL SPARS WERE REMOVED FOR CLEANING, INSPECTION, AND VARNISHING. WITH THE WING SPAR FITTINGS REMOVED, FOUND THE SPAR FITTING HOLES HAD CRACKS EMANATING FROM THE TWO INBOARD HOLES THROUGH THE BUTT OF THE SPA - [SDR 96ZZZX2385](https://openairdocs.org/sdr/96ZZZX2385.md): Spar · damaged · Mar 28, 1996 · N83032 · Bbavia 7AC · Wing Spar > DISMANTLED LEFT AND RIGHT WING FOR THE PURPOSE OF RECOVERING. WITH THE OLD FABRIC REMOVED, FOUND BOTH REAR SPARS HAD BEEN CHEWED BY MICE MIDWAY BETWEEN THE WING ROOT AND THE STRUT ATTACH FITTING. IT APPEARS THIS DAMAGE WAS PRESENT WHEN THE WINGS WERE LAST RE - [SDR 96ZZZX469](https://openairdocs.org/sdr/96ZZZX469.md): Seat Valve · loose · Jan 9, 1996 · N83975 · Bbavia 7AC · Fuel Control/Reciprocating Engines > ENGINE QUIT ON TAKEOFF. DISASSEMBLED CARBURETOR AND INSPECTION FOUND SEAT VALVE HAD NOT BEEN PROPERLY TORQUED. SEAT WORKED LOOSE AND LOWERED FLOAT LEVEL TO WHERE ENGINE COULD NOT DEVELOP FULL POWER. CARBURETOR OVERHAULED 10-95. - [SDR 95ZZZX5965](https://openairdocs.org/sdr/95ZZZX5965.md): Air Box Valve · failed · Sep 19, 1995 · N84458 · Bbavia 7AC · Engine Air Intake System > THE SPOT WELD WHICH ATTACHES THE BUTTERFLY VALVE TO THE SHAFT BROKE WHICH ALLOWED THE VALVE TO BE SUCKED UP INTO THE CARBURETOR AND BLOCK OFF THE AIR TO THE ENGINE. THIS CAUSED THE ENGINE RPM TO DROP TO 700 RPM. THE PILOT LANDED IN A PLOWED FIELD, NO FURTHER - [SDR 95ZZZX5107](https://openairdocs.org/sdr/95ZZZX5107.md): Valve · broken · Aug 30, 1995 · N82560 · Bbavia 7AC · Reciprocating Engine Cylinder Section > EMERGENCY LANDING MADE AFTER EXHAUST VALVE HEAD SEPARATED. THIS ENGINE HAD 732 HRS SINCE 'TOP' OVERHAUL AND 2,246 HOURS SINCE NEW. THIS IS THE 446-HOUR PAST MANUFACTURER'S RECOMMENDED TIME. - [SDR 95ZZZX2418](https://openairdocs.org/sdr/95ZZZX2418.md): Gascolator · bowl failed · Mar 31, 1995 · N1937E · Bbavia 7AC · Aircraft Fuel Filter/Strainer > THIS AIRCRAFT WAS INVOLVED IN A FUEL STARVATION ACCIDENT BELIEVED CAUSED BY FAILURE OF GASCOLATOR GLASS BOWL. SAFETY WIRE AND SAFETYING DEVICE STILL ATTACHED TO ASSY. CHAMPION ACFT CORP. SERVICE HINT NR 15 RECOMMENDS GLASS BOWLS BE REPLACED WITH METAL UNITS - [SDR 95ZZZX578](https://openairdocs.org/sdr/95ZZZX578.md): Elbow · bogus part · Jan 11, 1995 · N84304 · Bbavia 7AC · Reciprocating Engine Oil System > OIL PRESSURE LINE LEAKING AT 45 DEGREES, ELBOW EXITING THE CRANKCASE. REPLACED AUTOMOBILE FITTING WITH MS20823-4D FITTING WITH A NR 60 RESTRICTOR. ALSO, REPLACED OIL PRESSURE LINE FROM CRANKCASE TO FIREWALL. ## 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 aircraft_model_key = '7AC' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/model/champion-7ac/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.