# Service difficulty reports: Engineering & Research 415-C

A list on [Engineering & Research 415-C](https://openairdocs.org/model/engineering-research-415-c.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2022FA0000725](https://openairdocs.org/sdr/2022FA0000725.md): Exhaust Valve · stuck · Nov 23, 2022 · N99209 · Univar 415C · Reciprocating Engine Cylinder Section
  > EMERGENCY LANDING, ACCIDENT INVESTIGATION, DUE POWER LOSS. FOUND NR 3 CYLINDER EXHAUST VALVE STUCK IN VALVE GUIDE.
- [SDR 2020FA0000213](https://openairdocs.org/sdr/2020FA0000213.md): Spar · corroded · Apr 1, 2020 · N87277 · Univar 415C · Wing Spar
  > VISUALLY INSPECTED MAIN SPAR CENTER SECTION PER AD 2002-26-02 AND UNIVAIR SERVICE BULLETIN #31. - FOUND LIGHT SURFACE CORROSION ALONG CENTER SECTION SPAR WEBBING AND LOWER SPAR CAP. - FOUND THREE SHEARED RIVET HEADS IN THIS AREA THAT JOIN THE SPAR WEBBING AND
- [SDR 2015FA0000207](https://openairdocs.org/sdr/2015FA0000207.md): Spar Cap · cracked · May 13, 2015 · N93613 · Univar 415C · Wing Spar
  > AIRCRAFT WAS IN A DISASSEMBLED CONDITION FOR REPAIR/RESTORATION. WHILE INSPECTING THE ACFT IAW AD 02-26-02 AND SB 31, A CRACK WAS DETECTED IN THE FORWARD TOP MAIN SPAR CAP END ON THE RT SIDE WING STUB WHERE THE RT FWD WING ATTACH POINT IS LOCATED. CRACKS WER
- [SDR 2013FA0000297](https://openairdocs.org/sdr/2013FA0000297.md): Structure · corroded · May 20, 2013 · N99727 · Univar 415C · Fuselage Main, Keel
  > FOUND SIGNIFICANT CORROSION IN BOTH LT AND RT WING CENTER SECTION BEHIND REAR SPAR. REMOVED LOWER SKINS. REPLACED AFFECTED COMPONENTS, CLEANED AND TREATED SURROUNDING AREA. REASSEMBLED USING STANDARD MX PRACTICES AS SET FORTH IN AC 43-13-1B, SEC 4.
- [SDR 2013FA0000258](https://openairdocs.org/sdr/2013FA0000258.md): Throttle Cable · broken · May 2, 2013 · N94305 · Univar 415C · Fuel Control/Reciprocating Engines
  > WHILE ON THE DOWNWIND FOR LANDING, PILOT REDUCED POWER. ENGINE WENT TO IDLE RPM. AN ATTEMPT WAS MADE TO ADD POWER, WITH NO FURTHER CHANGE IN RPM. INVESTIGATION FOUND THAT THE THROTTLE HOUSING HAD SEPARATED FROM THE SLEEVE ON THE THROTTLE CABLE BEHIND THE IN
- [SDR 2011FA0000664](https://openairdocs.org/sdr/2011FA0000664.md): Attach Fitting · corroded · Oct 5, 2011 · N93938 · Univar 415C · Elevator Structure
  > DURING RESTORATION OF THIS AIRPLANE THE ATTACH POINT FOR THE ELEVATOR CONTROL WITHIN THE ELEVATOR ITSELF WAS FOUND TO BE LOOSE. THE ELEVATOR WAS REMOVED FROM THE ACFT AND TAKEN APART. THE ELEVATOR CONTROL ATTACH BRACKET WAS FOUND TO HAVE SEVERE CORROSION AND H
- [SDR 2011FA0000210](https://openairdocs.org/sdr/2011FA0000210.md): Spar · corroded · Mar 29, 2011 · N99558 · Univar 415C · Wing Spar
  > INSP OF WING CTR SECTION IAW AD 2002-26-02 INTER-GRANULAR CORROSION IN EXFOLIATION STAGE WAS DISCOVERED ON THE BOTTOM MAIN SPAR CAP, EXTREME REAR OTBD SECTIONS WHERE IT WAS MILLED TO ACCOMMODATE THE MLG TRUNNION AND JUST INBD. ALSO THE LT AND RT (WING WALK) I
- [SDR 2010FA0000349](https://openairdocs.org/sdr/2010FA0000349.md): Clevis · sheared · Apr 15, 2010 · N93876 · Univar 415C · Landing Gear Brake System
  > ON LANDING, LOST BRAKING ACTION. INVESTIGATION FOUND THE BRAKE PISTON CLEVIS ROD BETWEEN THE BRAKE PEDAL ARM AND THE BRAKE MASTERCYLINDER HAD SHEARED BELOW THE LOCK NUT.
- [SDR W59R29790](https://openairdocs.org/sdr/W59R29790.md): Propeller · damaged · Feb 26, 2010 · N99094 · Univar 415C · Propeller Assembly
  > SUBMITTED FOR OVERHAUL DUE TO VIBRATION OVER 1500 RPMS. PROPELLER WAS FOUND WITH POSSIBLE ELECTRICAL ARC BURNS ON SEVERAL PLACES IN THE AIRFOIL OF BOTH BLADES AND A 1.5 INCH LONG CRACK ON THE OUTSIDE OF THE HUB.
- [SDR 2007FA0001104](https://openairdocs.org/sdr/2007FA0001104.md): Skin · corroded · Dec 19, 2007 · N31140 · Univar 415C · Fuselage Main, Plate/Skin
  > IAW AD2002-26-02,- CORROSION FROM WATER, DIRT AND ACID FROM BATTERY ATE THROUGH BOTTOM SKINS 415-13058-1,415-13047L AND R, RIBS 415-13016L AND R AND BOTTOMS OF SERVICE ASSEMBLY NR 5. AIRCRAFT HAD SAT SINCE 1977.
- [SDR 2007FA0000619](https://openairdocs.org/sdr/2007FA0000619.md): Skin · corroded · Jul 17, 2007 · N2048H · Univar 415C · Wing, Center Box
  > (5) MISSING AN426-3 RIVET HEADS ON LOWER CENTER SECTION SKINS PN F13147-L/-R PROMPTED INSPECTION HOLE INSTALLATION IAW SB-31 FOR REPAIR ACCESS. LIGHT SURFACE CORROSION WAS FOUND ON LOWER SKINS AND STIFFENERS. BOTH SIDES WERE CLEANED AND TREATED FOR CORROSION.
- [SDR 060602](https://openairdocs.org/sdr/060602.md): Rib · corroded · Sep 9, 2006 · N99325 · Univar 415C · Fuselage Main, Structure
  > THE DEFECT WAS DISCOVERED DURING THE INITIAL COMPLIANCE WITH AD 2002-26-02 ON AN AIRCRAFT THAT HAD BEEN IN STORAGE FOR A NUMBER OF YEARS. AN APPROXIMATE 0.5 INCH BY 0.25 INCH AREA AT THE BOTTOM EDGE OF A LIGHTENING HOLE WAS CORRODED AND FLAKING. A COLLECTION O
- [SDR 2006FA0000349](https://openairdocs.org/sdr/2006FA0000349.md): Spar Cap · cracked · Mar 28, 2006 · N3158H · Univar 415C · Wing Spar
  > DURING ACCOMPLISHMENT OF SB NR 32, A 0.625 INCH LONG, SPANWISE CRACK WAS NOTED ON THE RT UPPER SPAR CAP IN THE MAIN SPAR CENTER SECTION APPROX 0.250 INCH IB OF THE CENTER SECTION OB END. PROBABLE CAUSE IS UNKNOWN. (K)
- [SDR 2005FA0000961](https://openairdocs.org/sdr/2005FA0000961.md): Rib · corroded · Jul 4, 2005 · N2172H · Univar 415C · Wing, Rib/Bulkhead
  > WHILE COMPLYING WITH SB 31 METHOD 1 (INSTALLING INSPECTION PANELS) AND AD 02-26-02, FOUND LEFT INBOARD WALK BOX RIB AFT ANGLE SUPPORT COMPROMISED WITH SEVERE EXFOLIATION DAMAGE. THE ORIGINAL PIECE WAS IN A BAY COATED WITH DIRT. THE AIRCRAFT HAD BEEN STORED W
- [SDR 2005FA0000148](https://openairdocs.org/sdr/2005FA0000148.md): Cylinder · failed · Nov 20, 2004 · N2919H · Univar 415C · Reciprocating Engine Cylinder Section
  > CYLINDER AND ROD FAILURE RESULTED IN CASE FAILURE CAUSING CYLINDER TO COME OF ENGINE. CAUSE UNKNOWN. NR 4 PISTON (AE-C530348) FAILURE. (WP09200502317). (K)
- [SDR 2005FA0000189](https://openairdocs.org/sdr/2005FA0000189.md): Spar Cap · corroded · Jun 13, 2004 · N3620H · Univar 415C · Wing Spar
  > WHILE PERFORMING A 3 YEAR INSPECTION OF THE WING CENTER SECTION IAW AD, NOTE: 2002-26-02 AND MFG SB NR 31, THE FORWARD UPPER SPAR CAPSTRIP, PN 415-13027 WAS FOUND TO HAVE AN AREA OF INTERGRANULAR (IG) CORROSION NEAR THE UPPER WING ATTACH FITTING. THE CORROSIO
- [SDR CA040615007](https://openairdocs.org/sdr/CA040615007.md): Coil · cracked · May 13, 2004 · Univar 415C · Magneto/Distributor
  > (CAN) AIRCRAFT HARD TO START WHEN ENGINE IS HOT. CHECKED MAGNETO TO ENGINE TIMING AND COULD NOT GET RT MAGNETO (S/N 540710) POINTS TO OPEN OR CLOSE. REMOVED LT MAGNETO (S/N 540756) DUE TO PROBLEMS FOUND IN RT MAGNETO. FOUND COIL CRACKED AND OPAQUE. AD 94-01-0
- [SDR CA040611002](https://openairdocs.org/sdr/CA040611002.md): Coil · cracked · May 13, 2004 · Univar 415C · Magneto/Distributor
  > (CAN) AIRCRAFT HARD TO START WHEN ENGINE IS HOT. CHECKED MAGNETO TO ENGINE TIMING. COULD NOT GET RT MAGNETO (S/N 540710) POINTS TO OPEN OR CLOSE. REMOVED MAGNETO FROM ENGINE AND FOUND GROUND ON COIL MISSING SCREW. COIL FOUND TO BE CRACKED AND OPAQUE IN COLOR
- [SDR 2004FA0000080](https://openairdocs.org/sdr/2004FA0000080.md): Spar · corroded · Jan 19, 2004 · N93517 · Univar 415C · Wing Spar
  > AD 2002-26-02 CORROSION INSPECTION: REMOVED BOTH WINGS AND BOTH FUEL TANKS. INSPECTED ENTIRE CENTER SECTION AND FOUND FOUR QUARTER SIZED AREAS OF LIGHT CORROSION ON FWD SIDE OF FRONT CENTER SECTION SPAR. CORROSION AREAS WERE SANDED WITH 240 GRIT SANDPAPER AND
- [SDR 2004FA0000541](https://openairdocs.org/sdr/2004FA0000541.md): Support · corroded · Jan 17, 2004 · N94107 · Univar 415C · Fuselage Miscellaneous Structure
  > THE SUPPORT ASSY THAT SUPPORTS THE BATTERY BOX AND BATTERY IS SEVERLY CORRODED. NO PART NUMBER FOUND IN MFG PARTS CATALOG.
- [SDR 2004FA0000540](https://openairdocs.org/sdr/2004FA0000540.md): Attach Fitting · corroded · Jan 3, 2004 · N94107 · Univar 415C · Ailerons
  > FOUND SEVERE GALVANIC CORROSION BETWEEN THE AILERON ATTACH BRACKETS AND REAR SPAR IN SEVERAL LOCATIONS. STEEL HAD ORIGINALLY BEEN CADIMUM PLATED. THIS WAS CRITICAL AS IT COULD ALLOW THE AILERON TO DEPART THE AIRPLANE. COULD NOT FIND A PN IN THE CATALOG AS T
- [SDR 2003FA0001258](https://openairdocs.org/sdr/2003FA0001258.md): Mount · bent · Dec 8, 2003 · N94107 · Univar 415C · Fuselage, Landing Gear Attach Fittings
  > LOWER TUBES FROM LOWER NOSE STRUT MOUNT TO FIRE WALL ATTACHMENT SLIGHTLY BENT. INSPECTION OF AIRPLANE INDICATED IT HAD BEEN ON ITS BACK AT SOMETINE IN THE PAST.
- [SDR 2003FA0001257](https://openairdocs.org/sdr/2003FA0001257.md): Bearing · wrong part · Dec 8, 2003 · N94107 · Univar 415C · Reciprocating Engine Front Section
  > ENGINE STOPPAGE INFLIGHT, FIRST DIAGNOSIS WAS CARBURETOR PROBLEM. SECOND STOPPAGE INDICATED A DIFFERENT PROBLEM. TEARDOWN OF ENGINE REVEALED A SERIES OF FRONT MAIN JOURNAL BEARING HAD BEEN INSTALLED, BLOCKING AN OIL GALLERY, CAUSING SEVERE WEAR AND SEIZURE O
- [SDR 2003FA0001256](https://openairdocs.org/sdr/2003FA0001256.md): Brake Assy · corroded · Dec 8, 2003 · N94107 · Univar 415C · Landing Gear Brake System
  > WHEEL HALVES BADLY CORRODED, GALVANIC CORROSION WHERE STEEL KEYS ARE LOCATED IN INNER WHEEL HALF. APPEARS TO BE FROM LONG TIME SETTING OUT OF USE. OUTSIDE STORAGE APPARENTLY AFFECTED CORROSION.
- [SDR 2003FA0001255](https://openairdocs.org/sdr/2003FA0001255.md): Spar · corroded · Dec 8, 2003 · N94107 · Univar 415C · Wing Spar
  > LEFT FRONT SPAR SHOWS EXFOLIATION CORROSION ABOUT 12 INCHES FROM ROOT. HAD BEEN INSPECTED AND COATED WITH PRIMER, THEN SIGNED OFF AS AIRWORTHY. THIS CORROSION APPEARED TO BE 75 PERCENT THROUGH BOTTOM SPAR FLANGE.
- [SDR 2003FA0001127](https://openairdocs.org/sdr/2003FA0001127.md): Spar Cap · corroded · Nov 1, 2003 · N99734 · Univar 415C · Wing Spar
  > WHEN PERFORMING INSPECTION REQUIRED BY PARAGRAPH (A)OF AD94-18-04 R1 FOUND SEVERE INTERGRANULAR CORROSION IN BOTH LT AND RT LOWER SPAR CAPS. CORROSION WAS LOCATED 6 INCHES FROM INBOARD END OF LOWER SPAR CAP TO 18 INCHES FROM INBOARD END. CORROSION HAS PENETRAT
- [SDR 2003FA0001021](https://openairdocs.org/sdr/2003FA0001021.md): Rib · corroded · Oct 3, 2003 · N10743 · Univar 415C · Fuselage Main, Longeron/Stringer
  > DURING INSPECTION REQUIRED BY AD 2002-26-02 USING METHOD 1 AND METHOD 3, CORROSION WAS DISCOVERED IN THE VICINITY OF THE PILOT'S SIDE INBOARD RIB P/N 415-13017L THIS CORROSION CANNOT BE SEEN USING THE WING REMOVAL METHOD OF INSPECTION. HOWEVER USING THE INSPEC
- [SDR 2003FA0000962](https://openairdocs.org/sdr/2003FA0000962.md): Exhaust Valve · separated · Aug 29, 2003 · N3182H · Univar 415C · Reciprocating Engine Cylinder Section
  > THE FACE OF THE NR 2 CYL EXHAUST VALVE SEPARATED FROM THE STEM OF THE VALVE. SUBSEQUENT DAMAGE TO THE POSTON AND CYLINDER WAS SUBSTANTIAL. THIS FAILURE OCCURRED WHILE IN CRUISE FLIGHT.
- [SDR 2003FA0000896](https://openairdocs.org/sdr/2003FA0000896.md): Bracket · corroded · Aug 9, 2003 · N87055 · Univar 415C · Wing Miscellaneous Structure
  > REMOVED AND REPLACED (2) ANGLE BRACKETS IN LT WING WALKWAY THAT WERE ATTACHED TO THE RIB. THESE WERE FOUND CORRODED DURING THE INSTALLATION OF INSPECTION PANELS BEING INSTALLED TO COMPLY WITH AD 02-26-02. IT APPEARED WATER HAD BECOME TRAPPED INSIDE TRAILING
- [SDR 2003FA0000849](https://openairdocs.org/sdr/2003FA0000849.md): Fuel Line · wrong part · Aug 6, 2003 · N2149H · Univar 415C · Aircraft Fuel Distribution System
  > DURING AN ANNUAL INSPECTION THE FUEL HOSES THAT ARE ROUTED FROM THE RT SIDE OF FIREWALL TO FUEL PUMP HAD BEEN SEVERLY EXPOSED TO HEAT FROM RT EXHAUST STACK CAUSING ONE HOSE TO BUBBLE UP. THESE HOSES DID NOT HAVE FIRE SLEEVE ON THEM. THIS IS AN INFLIGHT FIRE
- [SDR 2003FA0000618](https://openairdocs.org/sdr/2003FA0000618.md): Rib · corroded · Jun 10, 2003 · N147VX · Univar 415C · Wing, Rib/Bulkhead
  > AD 2002-26-02 ADMENDMENT 39-12987, MFG SERVICE BULLETIN NR 31. METHOD 1, INSPECTION HOLES IN WING CENTER SECTION. INSPECTED FRONT AND REAR SPARS...NO EVIDENCE OF CORROSION. DISCOVERED CORRODED RIB, RIGHT SIDE TRAILING EDGE WING WALK BOX. REMOVED AND REPLACED
- [SDR 2003FA0000620](https://openairdocs.org/sdr/2003FA0000620.md): Rib · corroded · Jun 10, 2003 · Univar 415C · Wing, Rib/Bulkhead
  > AD NO. 2001-CE-45-4D WING CENTER SECTION INSPECTION FOR CORROSION. SERVICE BULLETIN NO.31 USED METHOD 1, INSPECTION HOLES IN WING WALK. INSPECTED FRONT AND REAR SPARS. NO EVIDENCE OF CORROSION. FOUND CORRODED WING WALK TRAILING EDGE RIB, RIGHT SIDE. REMO
- [SDR 2001FA0000406](https://openairdocs.org/sdr/2001FA0000406.md): Rod · broken · Aug 29, 2001 · N94157 · Univar 415C · Landing Gear Steering System
  > STEERING ROD KNUCKLE BROKE AS AIRCRAFT WAS BEING REPOSITIONED AFTER LOG. THIS ROD HAS BROKEN NUMEROUS TIMES IN THE PAST, KNOW OF 3 RODS BREAKING IN THE PAST.
- [SDR 2000ZZZX721](https://openairdocs.org/sdr/2000ZZZX721.md): Indicator · failed · Feb 7, 2000 · N99248 · Univar 415C · Altimeter, Barometric/Encoder
  > DURING FIRST HOUR OF FLIGHT WITH FRESHLY OVERHAULED INSTRUMENT, THE 100 FOOT HAND STOPPED WORKING. AFTER REMOVAL OF THE INSTRUMENT, NOTICED SHAFT FOR THE HAND HAD DISENGAGED INTERNALLY. BY TILTING THE ALTIMETER, THE SHAFT COULD BE RE-ENGAGED WITH THE INTERN
- [SDR 99ZZZX1415](https://openairdocs.org/sdr/99ZZZX1415.md): Wire · shorted · Mar 1, 1999 · N99349 · Univar 415C · Electrical Power System Wiring
  > AFTER PRELIMINARY INVESTIGATION OF THE INCIDENT, IT WAS DETERMINED THAT FAILURE OF AN ELECTRICAL WIRE CAUSED A FIRE TO DEVELOP.
- [SDR 99ZZZX180](https://openairdocs.org/sdr/99ZZZX180.md): Gear · broken · Nov 29, 1998 · N99597 · Univar 415C · Magneto/Distributor
  > LEFT MAGNETO FAILED DURING PRE-TAKEOFF MAG CHECK. THREE TEETH ON LT MAG DRIVE GEAR MISSING. DURING REMOVAL OF OIL TANK, ACCESSORIES, AND ACCESSORY DRIVE CASE, ONE TOOTH WAS FOUND IN OIL TANK, TWO TEETH IN ACCY DRIVE CASE. BOTH MAGNETOS WITH DRIVE GEARS SENT
- [SDR 98ZZZX4598](https://openairdocs.org/sdr/98ZZZX4598.md): Carburetor · contaminated · Nov 1, 1998 · N99155 · Univar 415C · Fuel Control/Reciprocating Engines
  > AIRCRAFT WAS OUTSIDE FOR 3 YEARS NOT RUNNING. UPON INVESTIGATION, NOTED EXCESSIVE WATER IN CARBURETOR. REMOVED CARBURETOR FOR REPAIR.
- [SDR 99ZZZX588](https://openairdocs.org/sdr/99ZZZX588.md): Pump · failed · May 16, 1998 · N3230H · Univar 415C · Engine Fuel Pump
  > ENGINE DRIVEN FUEL TRANSFER PUMP FAILED. FUEL NOT TRANSFERRED TO HEADER FUEL TANK. GRAVITY FEED OF FUEL TO CARBURETOR. NOTE: ONE WAFER VALVE STUCK CLOSED. SPRING AND WAFER VALVE WAS LOCATED NEXT TO DIAPHRAGM.
- [SDR 97ZZZX4304](https://openairdocs.org/sdr/97ZZZX4304.md): Valve · stuck · Sep 1, 1997 · N415C · Univar 415C · Reciprocating Engine Cylinder Section
  > FOUND ENGINE EXHAUST VALVE STUCK. AIRCRAFT HAD BEEN RUN ON AUTO GAS. SMOH: 625 HOURS.
- [SDR 97ZZZX4302](https://openairdocs.org/sdr/97ZZZX4302.md): Reinforcement · corroded · Aug 1, 1997 · N87114 · Univar 415C · Wing Miscellaneous Structure
  > SEVERE CORROSION FOUND DURING ANNUAL. THIS OCCURED SINCE LAST ANNUAL JULY, 1996. CORROSION COULD NOT BE OBSERVED THROUGH INSPECTION HOLES IN WING. CAN ONLY BE SEEN WITH AILERON FULLY IN UP POSITION AND LOOKING UPWARD FROM THE GROUND. IT IS NOT READILY SEEN
- [SDR 97ZZZX557](https://openairdocs.org/sdr/97ZZZX557.md): Valve · failed · Dec 16, 1996 · N87226 · Univar 415C · Reciprocating Engine Cylinder Section
  > NR 1 CYLINDER SWALLOWED EXHAUST VALVE. HEAD OF VALVE EMBEDDED IN PISTON.
- [SDR 96ZZZX5418](https://openairdocs.org/sdr/96ZZZX5418.md): Spar Cap · corroded · Oct 12, 1996 · N2576H · Univar 415C · Wing Spar
  > UPON PREPPING WINGS FOR RE-COVER, EXFOLIATION DISCOVERED IN STBD WING MAIN SPAR CAP UPPER. SEVERAL LAYERS OF VARIOUS TYPES OF TAPE HID THE CORROSION UNTIL REMOVED FOR INSPECTION. EXFOLIATION RUNS FULL LENGTH OF SPAR CAP, VARYING IN DEPTH TO.0625 INCH.
- [SDR 96ZZZX1343](https://openairdocs.org/sdr/96ZZZX1343.md): Hub Assy · failed · Feb 19, 1996 · N99224 · Univar 415C · Propeller Hub Section
  > HUB CRACKED ALONG KEYWAY AND PROGRESSED UP PROP FLANGE TO WITHIN.50 INCH OF BOLT HOLE. ASSUME THIS ALLOWED THE HUB TO BECOME LOOSE AND LET NUT, PN 21202, LOOSEN AND WEAR ON SAFETY PIN, PN AN 392-11, CAUSING IT TO BREAK AND ALLOW NUT TO UNSCREW AND LET PROP A
- [SDR 95ZZZX6421](https://openairdocs.org/sdr/95ZZZX6421.md): Bushing · unapproved · Oct 17, 1995 · N93990 · Univar 415C · Propeller Hub Section
  > DURING ANNUAL INSPECTION, FOUND FUEL HOSE FABRICATED AS BUSHINGS AND INSTALLED IN PLACE OF NR A437 STEEL PROPELLER DOWEL BUSHINGS.
- [SDR 96ZZZX714](https://openairdocs.org/sdr/96ZZZX714.md): Spar · kinked · Aug 15, 1995 · Univar 415C · Wing Spar
  > UPON INSPECTION PRIOR TO RECOVER, FOUND BOTH WINGS HAD KINK IN AUXILIARY SPAR APPROXIMATELY 8 INCHES OUTBOARD FROM WING ATTACH. WINGS WERE METAL COVERED AND STORED OUTSIDE FOR SEVERAL YEARS.
- [SDR 95ZZZX5623](https://openairdocs.org/sdr/95ZZZX5623.md): Valve Body · cracked · Aug 1, 1995 · N93781 · Univar 415C · Fuel Boost Pump
  > PUMP FAILED TO PUMP FUEL FROM WING TANK OF FUSELAGE TANK DUE TO A CRACK IN THE VALVE BODY UPPER TO LOWER CHAMBER CAUSING LOSS OF PRIME. THE CRACK WAS CAUSED BY SEVERE INTERGRANULAR CORROSION. THE ENGINE QUIT DUE TO FUEL STARVATION. PILOT WAS FORCED TO LAND

## 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 = '415C'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/engineering-research-415-c/reports

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