# Service difficulty reports: Cessna 172M

A list on [Cessna 172M](https://openairdocs.org/model/cessna-172m.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 12 · 589 reports

- [SDR 2026FA0000593](https://openairdocs.org/sdr/2026FA0000593.md): Impulse Coupling · sheared · Jul 8, 2026 · N5367H · Cessna 172M · Magneto/Distributor
  > AIRCRAFT REPORTED TO BE HARD TO START OVER MULTIPLE STARTS. DURING 100HR INSPECTION REMOVED LEFT MAGNETO P/N 4371 AND DISASSEMBLED FOR INSPECTION. DURING INSPECTION OF MAGNETO FOUND 1 PAWL PIN SHEARED FROM IMPULSE COUPLING.
- [SDR 2026FA0000386](https://openairdocs.org/sdr/2026FA0000386.md): Stiffener · sheared · May 15, 2026 · N61803 · Cessna 172M · Wing Miscellaneous Structure
  > FLAP TRACK STIFFENERS THAT KEEP THE FLAP TRACKS STRAIGHT AND TRUE WERE FOUND TO BE SHEARED OFF AND/OR CRACKED.
- [SDR 2026FA0000336](https://openairdocs.org/sdr/2026FA0000336.md): Stiffener · sheared · May 7, 2026 · N61803 · Cessna 172M · Trailing Edge Flaps
  > FLAP TRACK STIFFENERS THAT KEEP THE FLAP TRACKS STRAIGHT AND TRUE WERE FOUND TO BE SHEARED OFF AND/OR CRACKED.
- [SDR 2026FA0000349](https://openairdocs.org/sdr/2026FA0000349.md): Flap Track · binding · May 5, 2026 · N20544 · Cessna 172M · Trailing Edge Flap Control System
  > DURING STALL TRAINING WITH FLAPS EXTENDED FULL, RECOVERED FROM STALL ATTEMPTED TO RAISE FLAPS AND WOULD NOT RAISE. FOUND RH FLAP TO BE TWISTED AND BENT. RH INBD FLAP TRACK LOWER BRACKETS WERE BROKEN. APPEARS RH INBD FLAP TRACK FAILED CAUSING FLAP TO BIND IN I
- [SDR 2026FA0000253](https://openairdocs.org/sdr/2026FA0000253.md): Bulkhead · cracked · Apr 6, 2026 · N9698V · Cessna 172M · Propeller Hub Section
  > FOUND FORWARD PROPELLER SPINNER BULKHEAD CRACKED AT 3 PROPELLER BOLT HOLES. 428.3 HOURS ON PART. WAS REPLACED PRIOR ON APR 21, 2025. PROPELLER WAS BALANCED ON 1/13/2025. BALANCED TO.07 IPS.
- [SDR 2026FA0000214](https://openairdocs.org/sdr/2026FA0000214.md): Bushing Sleeve · migrated · Mar 25, 2026 · N1470 · Cessna 172M · Reciprocating Engine Power Section
  > FOUND BRONZE PARTICLES IN FULL FLOW FILTER AT INSPECTION. TRACED TO MIGRATING CONNECTING ROD BUSHINGS ON ALL 4 RODS
- [SDR 2026FA0000201](https://openairdocs.org/sdr/2026FA0000201.md): Impulse Coupling · defective · Mar 20, 2026 · N314AV · Cessna 172M · Magneto/Distributor
  > MAGNETO PULLED DURING ROUTINE MAINTENANCE TO CHECK FOR THE PRESENCE OF A CHAMPION MANUFACTURED IMPULSE COUPLING. ONE WAS FOUND INSTALLED AND THUS REMOVED FOR REPLACEMENT WITH A NEW ES3163 IMPULSE COUPLING. AFTER REMOVAL OF THE OLD IMPULSE COUPLING, I DISASSEM
- [SDR 2026FA0000159](https://openairdocs.org/sdr/2026FA0000159.md): Cylinder · cracked · Mar 5, 2026 · N70052 · Cessna 172M · Reciprocating Engine Cylinder Section
  > POSITION # 1 &2 CYLINDER EXHAUST PORT CRACK FROM THE INBOARD EXHAUST STUD EXTENDING TO THE BACK OF THE PORT. CRACK VISIBLE THROUGH THE FINS. SUPERIOR CYLINDERS PN: SL32006W-A1 SERIAL NUMBER 326W000003625 & 326W000003623.
- [SDR 2025FA0000723](https://openairdocs.org/sdr/2025FA0000723.md): Sump · broken · Oct 17, 2025 · N61789 · Cessna 172M · Fuselage Main, Structure
  > STATIC CONDENSATION BULB P/N S-1258-1 FOUND SEPARATED FROM AN 1/8 PIPE BY PIPE 90 DEGREE FITTING. THESE CONDENSATION BULBS ARE OF VERY CHEAP PLASTIC AND ARE FAMOUS FOR LEAKING RIGHT OUT OF THE BOX. THERE SEEMS TO BE NO OTHER PART OF BETTER QUALITY. I HAVE SEEN
- [SDR 2025FA0000666](https://openairdocs.org/sdr/2025FA0000666.md): Wire Harness · chafed · Sep 28, 2025 · N61789 · Cessna 172M · Electrical Power System Wiring
  > THE BATTERY BOX FOR THE LEAD ACID BATTERY INTERFERES WITH THE LEFT MAGNETO HARNESS AND CHAFES THE HARNESS LEADS OVER TIME. THE INBOARD, FORWARD CORNER IS THE POINT OF CONTACT. I HAVE SEEN THIS SITUATION IN MANY 172S. ELECTRONIC MAGNETOS LIKE THE SUREFLY HAVE
- [SDR 2026FA0000181](https://openairdocs.org/sdr/2026FA0000181.md): Bulkhead · cracked · Aug 19, 2025 · N73345 · Cessna 172M · Propeller Assembly
  > FOUND SPINNER BULKHEAD CRACKED 273 HRS. REPLACED BULKHEAD WITH NEW P/N: 0550321-4
- [SDR 2025FA0000427](https://openairdocs.org/sdr/2025FA0000427.md): Flapper Valve · cracked · Jun 26, 2025 · N4454R · Cessna 172M · Engine Air Intake System
  > ON APPROACH CARBURETOR HEAT WAS APPLIED AND THE ENGINE IMMEDIATELY LOST POWER BUT DID NOT STOP RUNNING. THE PILOT ATTEMPTED TO DE-SELECT THE CARBURETOR HEAT AND THE LOSS OF POWER PERSISTED. THE AIRCRAFT WAS ABOUT 2300 FEET MSL AND 2 NM FROM THE RUNWAY. THE AIR
- [SDR 2026FA0000180](https://openairdocs.org/sdr/2026FA0000180.md): Bulkhead · cracked · Apr 17, 2025 · N73345 · Cessna 172M · Propeller Assembly
  > DURING A FLEET WIDE SAFETY STAND DOWN. REMOVED SPINNER TO INSPECT FRONT PROPELLER BULKHEAD FOR CRACKS. FOUND CRACKS AT BOLT HOLES
- [SDR 2025FA0000096](https://openairdocs.org/sdr/2025FA0000096.md): Throttle Control · loose · Feb 8, 2025 · N73454 · Cessna 172M · Fuel Control/Reciprocating Engines
  > ACFT RETURNED TO BASE DUE TO VIBRATION AT 300FT ON 2/8/25. PILOT REPORTED ENGINE STARTED SHAKING SIGNIFICANTLY. HE PULLED CARB HEAT HOT SAW NO CHANGE. TOLD TOWER HE WAS LANDING. CARB HEAT SYSTEM WAS INSPECTED WITH NO DEFECTS FOUND. CARB WAS REPLACED. CARB
- [SDR 2024FA0000599](https://openairdocs.org/sdr/2024FA0000599.md): Case Half · worn · Aug 13, 2024 · N20565 · Cessna 172M · Magneto/Distributor
  > REMOVED AND REPLACED RH MAGNETO DUE TO 500 HOUR OVERHAUL LIMIT. NEW MAGNETO INSTALLED FOR 78.2 HOURS BEFORE A FLIGHT WAS CANCELLED DUE TO EXCESSIVE VIBRATION AND HIGH MAG DROP ON RH SIDE AT PRE-RUN. ATTEMPTED TO TIME RH MAGNETO TO ENGINE. POINTS APPEARED TO OP
- [SDR 2024FA0000258](https://openairdocs.org/sdr/2024FA0000258.md): Crankshaft · cracked · Mar 26, 2024 · N70392 · Cessna 172M · Engine (Reciprocating)
  > TOTAL INTERNAL CRANKSHAFT FAILURE AT CHEEK BETWEEN #3 AND #4 CONNECTING ROD JOURNALS CAUSING CRANKCASE TO COMPLETELY SEPARATE IN THE CENTER. CRACK APPEARS TO HAVE STARTED IN THE REAR THRUST RADIUS OF #3 CONNECTING ROD JOURNAL. PILOT HAD REPORTED ENGINE ROU
- [SDR 2023FA0000751](https://openairdocs.org/sdr/2023FA0000751.md): Pushrod · damaged · Nov 9, 2023 · N9012H · Cessna 172M · Reciprocating Engine Cylinder Section
  > DURING INSPECTION FOR ROUGH RUNNING ENGINE, PERFORMED SB388C (EXHAUST VALVE GUIDE INSPECTION) & FOUND 3EA ROCKER ARMS P/N 17F19357 & 3EA PUSH RODS P/N 15F19957-10 WITH MECHANICAL DAMAGE (HEAVY SCUFF - SCORING). ROCKER ARMS & PUSH RODS TSN: 147.9. PREVIOUSLY RE
- [SDR 2023FA0000613](https://openairdocs.org/sdr/2023FA0000613.md): Rocker · damaged · Oct 19, 2023 · N9643Q · Cessna 172M · Reciprocating Engine Cylinder Section
  > LYCOMING FACTORY OVERHAULED O-320-D2J, S/N L-17060-39E. DURING ROUTINE MX, SB388C (EXHAUST VALVE GUIDE INSP.) FOUND 4EA PUSH RODS P/N 15F28835-10, 2EA PUSH RODS P/N 15F28835-09, 6EA ROCKER ARMS P/N17F19357, 6EA SOCKETS P/N 15B21319 & 6EA LIFTERS P/N 15B26066 T
- [SDR 2023FA0000602](https://openairdocs.org/sdr/2023FA0000602.md): Rocker · damaged · Oct 18, 2023 · N9936V · Cessna 172M · Engine (Reciprocating)
  > LYCOMING FACTORY REBUILT - O-320-D2J, S/N RL-20892-39E. DURING ROUTINE MX. SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 3EA HYDRUALIC TAPPETS P/N 15B21319, 3EA HYDRAULIC LIFTERS P/N 15B26066, 3EA ROCKER ARMS P/N 17F19357, 2EA PUSH RODS P/N 15F28835-10 & 1EA P
- [SDR 2023FA0000539](https://openairdocs.org/sdr/2023FA0000539.md): Rocker · damaged · Sep 14, 2023 · N9012H · Cessna 172M · Engine (Reciprocating)
  > LYCOMING FACTORY REBUILT O-320-D2J, S/N RL-20764-39E. DURING ROUTINE MX, SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 7EA ROCKER ARMS P/N 17F19357, 1 EA PUSH ROD P/N 15F28835-09, 6EA PUSH RODS P/N 15F28835-10, 7EA TAPPET SOCKETS P/N 15B21319 & 7EA PLUNGERS P/
- [SDR 2023FA0000467](https://openairdocs.org/sdr/2023FA0000467.md): Rocker · damaged · Aug 25, 2023 · N17HZ · Cessna 172M · Engine (Reciprocating)
  > LYCOMING FACTORY REBUILT O-320-D2J, TSN / TT: 2089.1. DURING ROUTINE MX, LYCOMING SB388C (EXHAUST VALVE GUIDE INSPECTION) FOUND 6EA VALVE PUSH RODS P/N 15F28835-10, 6EA ROCKERS P/N 17F19357 & 1EA TAPPET SOCKET P/N 15B21319 TO HAVE MECHANICAL DAMAGE (HEAVY SCU
- [SDR 2023FA0000358](https://openairdocs.org/sdr/2023FA0000358.md): Unknown · unknown · Jul 7, 2023 · Cessna 172M · Standard Practices/Structures
  > BROKEN- CRACKED
- [SDR 2023FA0000311](https://openairdocs.org/sdr/2023FA0000311.md): Oil System · leaking · Jun 12, 2023 · N5171H · Cessna 172M · Turbine Engine Oil System
  > TEST, TEST, TEST: N5171H, C172, DECLARED AN EMERGENCY DUE TO SMOKE IN THE COCKPIT AND LANDED WITHOUT INCIDENT. 01/24/2023 1705Z///// MAINTENANCE FOUND THAT OIL CAME OUT OF THE OIL LINE GOING TO THE OIL PRESSURE GAGE AND WENT ONTO THE EXHAUST PIPE CAUSING THE S
- [SDR 2023FA0000620](https://openairdocs.org/sdr/2023FA0000620.md): Cylinder · damaged · May 10, 2023 · N2671L · Cessna 172M · Reciprocating Engine Cylinder Section
  > NUMBER 5 CYLINDER EXHAUST VALVE BROKE AT THE VALVE STEAM KEEPER. THE BRAKE WAS A CLEAN BRAKE, PICTURES AVAILABLE ON REQUEST. THE CYLINDER WAS COMPLETELY DESTROYED PISTON BUSTED IN HALF. THE CYLINDER P/N 658319A2BP HAD APPROXIMATELY 35HRS. FROM NEW. CUSTOMER
- [SDR 2023FA0000097](https://openairdocs.org/sdr/2023FA0000097.md): Battery Pack · mismanufactured · Feb 22, 2023 · N12492 · Cessna 172M · Emergency Locator Beacon
  > A NEW ARTEX ELT WITH A NEW BATTERY WAS INSTALLED IN THE AIRCRAFT ON 8/16 AND THE BATTERY PACK LABEL HAD A MANUFACTURE DATE OF 5/16 AND AN EXPIRATION DATE OF 10/23. UPON ROUTINE INSPECTION ON 2/23, THE BATTERY DID NOT HAVE ENOUGH ENERGY TO PASS ITS INTERNAL TES
- [SDR 2023FA0000066](https://openairdocs.org/sdr/2023FA0000066.md): Crankshaft · corroded · Feb 6, 2023 · N20093 · Cessna 172M · Engine (Reciprocating)
  > SIGNIFICANT CORROSION WAS FOUND ON THE INTERIOR OF THE CRANKSHAFT NEAR THE PROPELLER FLANGE, JUST BEHIND THE SHAFT PLUG. THIS AREA IS REGULARLY INSPECTED IF THE ENGINE IS RATED FOR 160HP PER AD 98-02-08. SINCE THIS AIRCRAFT IS ONLY RATED FOR 150HP IT IS NOT RE
- [SDR 2023FA0000086](https://openairdocs.org/sdr/2023FA0000086.md): Oil System · leaking · Jan 24, 2023 · N5171H · Cessna 172M · Turbine Engine Oil System
  > N5171H, C172, DECLARED AN EMERGENCY DUE TO SMOKE IN THE COCKPIT AND LANDED WITHOUT INCIDENT. 01/24/2023 1705Z///// MAINTENANCE FOUND THAT OIL CAME OUT OF THE OIL LINE GOING TO THE OIL PRESSURE GAGE AND WENT ONTO THE EXHAUST PIPE CAUSING THE SMOKE.
- [SDR 2022FA0000272](https://openairdocs.org/sdr/2022FA0000272.md): Cowl Fastener · broken · May 22, 2022 · N3JA · Cessna 172M · Fasteners
  > I DO NOT KNOW IF I OR THE MANUFACTURER NEED TO REPORT THIS. I BOUGHT A FEW COWLING FASTENERS AND THEY ALL FAILED WITHIN 30 HOURS OF INSTALLATION. FEB 2022 I BOUGHT 4 SKYBOLT SK2003-42A COWLING MOUNT FASTENERS FROM THE MANUFACTURER. 3 WERE INSTALLED ON THE
- [SDR 2020FA0000318](https://openairdocs.org/sdr/2020FA0000318.md): Cylinder · separated · Jun 30, 2020 · N555CV · Cessna 172M · Reciprocating Engine Cylinder Section
  > INSPECTION OF THE ENGINE FOUND FORWARD RIGHT CYLINDER SPLIT MIDWAY IN TWO SECTIONS EXPOSING PISTON AND COMBUSTION CHAMBER LEAVING 1 /1/2 INCH. ROCKER ARM TUBES ALSO SEPARATED FROM ENGINE BLOCK. CYLINDER ASSEMBLY PN: SL32006W-A20P WAS INSTALLED NEW ON LAST OV
- [SDR 3WF2020F00000](https://openairdocs.org/sdr/3WF2020F00000.md): Drive Assy · cracked · Nov 2, 2019 · N9904V · Cessna 172M · Trailing Edge Flap Actuator
  > DURING FLIGHT THE LEFT FLAP WAS RETRACTED AFTER A LANDING AND TAKEOFF. UP WIND THE STUDENT ADVISED HIS INSTRUCTOR THAT HE WAS HAVING CONTROL ISSUES. THE INSTRUCTOR QUICKLY ASCERTAINED THAT HE HAD ASYMMETRICAL FLAP DEPLOYMENT. HE LOWERED THE FLAPS AGAIN AND
- [SDR CA190808002](https://openairdocs.org/sdr/CA190808002.md): Impulse Coupling · failed · Jul 31, 2019 · Cessna 172M · Magneto/Distributor
  > (CAN) DURING PRE-TAKEOFF GROUND RUN THE PILOT REPORTED A "DEAD RH MAG". MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE IMPULSE COUPLING ON THE RH MAGNETO HAD BROKEN WHICH CAUSED A SHIFT IN MAGNETO-TO-ENGINE TIMING CAUSING THE ENGINE TO NOT RUN ON THE RH MAGN
- [SDR CA190731031](https://openairdocs.org/sdr/CA190731031.md): Lock Nut · undertorqued · Jul 31, 2019 · Cessna 172M · Horizontal Stabilizer Structure
  > (CAN) CREAKING NOISE REPORTED FROM TAIL OF AIRCRAFT. MAINTENANCE NOTED THAT THE TORQUE ON THE NAS679 LOCK NUTS AS USED BY CESSNA ON THE HORIZONTAL STABILIZER WERE LOOSE. THE NAS679A3 NUTS WERE PART OF A RECALL FROM CESSNA SE69-28, BUT ONLY IN THE -3 SIZE. THE
- [SDR CA190731029](https://openairdocs.org/sdr/CA190731029.md): Circuit Breaker · failed · Jul 22, 2019 · Cessna 172M · Electrical Power System
  > (CAN) THE AVIONICS WERE REPORTED TO BE UNSERVICEABLE. THE AVIONICS MASTER CIRCUIT BREAKER SWITCH WAS FOUND TO BE IN A `NEUTRAL` POSITION AND WHEN POSITIONED TO THE ON POSITION THE AVIONICS WORKED. IT WAS DETERMINED THAT DURING ENGINE OPERATION THE VIBRATION WA
- [SDR 2019FA0000221](https://openairdocs.org/sdr/2019FA0000221.md): Tube · failed · Jul 11, 2019 · N1674V · Cessna 172M · Tire Tube
  > INSTALLED 600 X 6 MAIN GEAR TUBES IN JAN 2019 AND AT THE FIRST 100 HOUR I ROTATED TIRES AND UPON ROTATING THE TUBES AND AIRING UP TIRES BOTH TUBES FAILED AT THE PARTING SEAM IN THE MIDDLE OF THE TIRE ALMOST LIKE THERE WASN'T A GOOD BOND BETWEEN THE TUBE HALVE
- [SDR 2019FA0000193](https://openairdocs.org/sdr/2019FA0000193.md): Bolt · broken · Jun 25, 2019 · N1666V · Cessna 172M · Main Landing Gear Attach Section
  > RIGHT HAND MAIN LANDING GEAR BOLT, PN S3461-108, WAS FOUND BROKEN DURING ANNUAL INSPECTION. DUE TO THE BOLT BEING BROKEN, THE LANDING GEAR WAS ABLE TO MOVE IN THE RIGHT HAND INBOARD SUPPORT, PN 0541195-6, CAUSING IT TO WEAR. WE REPLACED THE SUPPORT ON THE RIGH
- [SDR CA190618012](https://openairdocs.org/sdr/CA190618012.md): Structure · failed · Jun 13, 2019 · Cessna 172M · Trailing Edge Flaps
  > (CAN) C XXXX FLAP RETRACTION INCIDENT REPORT 14 JUNE 2019 OCCURRENCE DATE: 12 JUNE 2019 CALLED TO EXAMINE AIRCRAFT AS PARKED ON TAXIWAY IN FRONT OF HANGAR FOLLOWING AN INCIDENT WHERE THE FLAPS FAILED TO RETRACT IN THE GO-AROUND DURING CIRCUITS. FOUND RIGHT HAN
- [SDR CA190325013](https://openairdocs.org/sdr/CA190325013.md): Magneto · malfunctioned · Mar 21, 2019 · Cessna 172M · Magneto/Distributor
  > (CAN) WHILE PERFORMING PRE-FLIGHT ENGINE RUN UP, WHEN RIGHT MAGNETO WAS SELECTED, THE ENGINE BEGAN TO RUN VERY ROUGH ALMOST TO THE POINT OF STOPPING. THE AIRCRAFT RETURNED TO THE HANGAR AND THE FLIGHT WAS CANCELLED.
- [SDR CA190325012](https://openairdocs.org/sdr/CA190325012.md): Magneto · malfunctioned · Mar 21, 2019 · Cessna 172M · Magneto/Distributor
  > (CAN) WHILE PERFORMING PRE-FLIGHT ENGINE RUN UP, WHEN RIGHT MAGNETO WAS SELECTED, THE ENGINE BEGAN TO RUN VERY ROUGH ALMOST TO THE POINT OF STOPPING. THE AIRCRAFT RETURNED TO THE HANGAR AND THE FLIGHT WAS CANCELLED. DECIDED TO REMOVE BOTH MAGNETOS AND INSTALL
- [SDR 2020FA0000066](https://openairdocs.org/sdr/2020FA0000066.md): Cylinder Head · cracked · Dec 11, 2018 · N63SA · Cessna 172M · Reciprocating Engine Cylinder Section
  > APPROXIMATELY 2 INCH RADIAL CRACK IN CYLINDER HEAD ADJACENT TO AND OUTSIDE OF THE INTAKE VALVE. EXTERNAL EVIDENCE OF EXHAUST GASSES ESCAPING FROM CRACK WAS PRESENT AND COMPRESSION TEST PRODUCED FREE FLOW OF SHOP AIR FROM CYLINDER HEAD BETWEEN THE 9TH AND 10TH
- [SDR 2020FA0000072](https://openairdocs.org/sdr/2020FA0000072.md): Cylinder Head · cracked · Nov 13, 2018 · N63SA · Cessna 172M · Reciprocating Engine Cylinder Section
  > APPROXIMATE 1.5 INCH RADIAL CRACK IN CYLINDER HEAD ADJACENT TO AND OUTSIDE OF THE INTAKE VALVE. EXTERNAL EVIDENCE OF EXHAUST GASSES ESCAPING FROM CRACK WAS PRESENT AND COMPRESSION TEST PRODUCED FREE FLOW OF SHOP AIR FROM CYLINDER HEAD BETWEEN THE 9TH AND 10TH
- [SDR CA180925011](https://openairdocs.org/sdr/CA180925011.md): Impulse Coupling · loose · Sep 21, 2018 · Cessna 172M · Magneto/Distributor
  > (CAN) DURING FIRST 500 HOUR INSPECTION ON THE MAGNETO THE RIVETS ON THE IMPULSE COUPLING WERE FOUND TO BE LOOSE. THE MANUFACTURER WAS CONTACTED AND THE IMPULSE COUPLING WAS REPLACED. (TC# 20180925011)
- [SDR 2020FA0000071](https://openairdocs.org/sdr/2020FA0000071.md): Cylinder Head · cracked · Mar 9, 2018 · N63SA · Cessna 172M · Reciprocating Engine Cylinder Section
  > APPROXIMATELY 2 INCH RADIAL CRACK IN CYLINDER HEAD ADJACENT TO AND OUTSIDE OF THE INTAKE VALVE. EXTERNAL EVIDENCE OF EXHAUST GASSES ESCAPING FROM CRACK WAS PRESENT AND COMPRESSION TEST PRODUCED FREE FLOW OF SHOP AIR FROM CYLINDER HEAD BETWEEN THE 9TH AND 10TH
- [SDR 2018FA0000001](https://openairdocs.org/sdr/2018FA0000001.md): Engine · power loss · Jan 3, 2018 · N73435 · Cessna 172M · Engine (Reciprocating)
  > MOMENTARY 200 RPM DROP DURING CRUISE. MADE PRECAUTIONARY LANDING, PERFORMED ENGINE RUN UPS AND COULD NOT DUPLICATE THE MALFUNCTION.
- [SDR 2017FA0000491](https://openairdocs.org/sdr/2017FA0000491.md): Connecting Rod · misinstalled · Sep 14, 2017 · N3TN · Cessna 172M · Reciprocating Engine Power Section
  > DURING INSPECTION OF CONNECTING RODS FOR AD2017-16-11, MSB 632B, AN CONNECTING ROD BOLT WAS FOUND WITH INSUFFICIENT THREADS TO HOLD THE CONNECTING ROD TOGETHER.
- [SDR 2017FA0000347](https://openairdocs.org/sdr/2017FA0000347.md): G Switch · no test · Aug 4, 2017 · N1955V · Cessna 172M · Emergency Locator Beacon
  > ELT FAILED TEST OF THE INTERNAL G-WITCH. ELT WOULD NOT SWITCH FROM STANDBY TO ACTIVATE DURING TEST. OPERATIONAL CHECK OF ELT IN ON POSITION GOOD.
- [SDR 2017FA0000284](https://openairdocs.org/sdr/2017FA0000284.md): Seat · failed · Jul 8, 2017 · N9121H · Cessna 172M · Flight Compartment Equipment
  > DURING THE PILOT'S GROUND PREFLIGHT, THE PILOT SEAT (ADJUSTABLE HEIGHT AND BACK SUPPORT ANGLE) WAS ADJUSTED FOR CONFIGURATION. THE BACK SUPPORT PORTION OF PILOT SEAT FELL BACK ONTO THE REAR SEAT. THE JACK SCREW THAT ADJUSTS THE POSITION OF THE SEAT BACK ANGLE
- [SDR 2017FA0000026](https://openairdocs.org/sdr/2017FA0000026.md): Processor · burned out · Dec 28, 2016 · N903NS · Cessna 172M · Cabin Equipment/Furnishings
  > PILOT EXPERIENCED AN ELECTRICAL BURNING ODOR DURING FLIGHT. THE ODOR ORIENTED IN THE VICINITY OF THE CAMERA SYSTEM'S COMPUTER. PILOT DISENGAGED THE CIRCUIT BREAKER AND OBSERVED AN IMMEDIATE DISSIPATION OF THE ELECTRICAL ODOR. PILOT PERFORMED A NORMAL LANDI
- [SDR 2016FA0000361](https://openairdocs.org/sdr/2016FA0000361.md): Throttle Arm · loose · Jul 28, 2016 · N1256U · Cessna 172M · Fuel Control/Reciprocating Engines
  > AFTER ABOUT 15 MINUTES OF CONDUCTING A CURRENCY FLIGHT, THE PILOT WAS TURNING BASE LEG FOR RUNWAY 10, THE PILOT TRIED TO REDUCE THE POWER AND DISCOVERED THAT THE THROTTLE WAS NOT RESPONDING, IT WAS STILL PRODUCING FULL POWER. A GO AROUND WAS INITIATED, WE REM
- [SDR 2016FA0000329](https://openairdocs.org/sdr/2016FA0000329.md): Butterfly Valve · torn · Jul 13, 2016 · N20357 · Cessna 172M · Engine Air Intake System
  > PILOT REPORTED LOSS OF RPM DURING TAKEOFF, DURING TROUBLESHOOTING IT WAS DISCOVERED RPM WOULD RETURN WHEN THE MIXTURE CONTROL WAS LEANED, INDICATING A RICH MIXTURE CONDITION. DURING A VISUAL INSPECTION OF THE INDUCTION SYSTEM (I.E. AIRBOX AND CARBURETOR) A PIE
- [SDR 2016FA0000370](https://openairdocs.org/sdr/2016FA0000370.md): Rotor · cracked · Jun 9, 2016 · N13295 · Cessna 172M · Magneto/Distributor
  > AIRCRAFT CAME INTO SHOP FOR ANNUAL INSPECTION AND PILOT MENTIONED THAT ON LAST FLIGHT HE HAD AROUND A 300 RPM DROP ON RT MAGNETO. PILOT LEANED MIXTURE AND PERFORMED ANOTHER CHECK DURING THE ANNUAL INSPECTION THE TIMING VARIED FROM 25 TO 0 DEGREES BEFORE TOP D

Next page: https://openairdocs.org/model/cessna-172m/reports.md?page=2

## 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 = '172M'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/cessna-172m/reports

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