# Service difficulty reports: Jacobs L-4 A list on [Jacobs L-4](https://openairdocs.org/engine/jacobs-l-4.md). Newest first. General aviation reporting is voluntary. - [SDR 2006FA0000021](https://openairdocs.org/sdr/2006FA0000021.md): Brake Assy · corroded · Jan 4, 2006 · N1528D · Cessna 195A · Brake > DISASSEMBLED BRAKE AND FOUND THAT THE BRAKE CYLINDER WAS CORRODED FROM WHERE THE O-RING MAKES A SEAL TO THE IB STOP. THE O-RING WAS HARD AND HAD TAKEN A SET. MFG P/N 0341015. - [SDR 2004FA0000435](https://openairdocs.org/sdr/2004FA0000435.md): Hinge Bracket · cracked · May 25, 2004 · N4352V · Cessna 195 · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000460](https://openairdocs.org/sdr/2004FA0000460.md): Hinge Bracket · cracked · May 25, 2004 · N4372N · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKEST AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000463](https://openairdocs.org/sdr/2004FA0000463.md): Hinge Bracket · cracked · May 25, 2004 · N4332V · Cessna 195 · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000468](https://openairdocs.org/sdr/2004FA0000468.md): Hinge Bracket · corroded · May 25, 2004 · N195WG · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000480](https://openairdocs.org/sdr/2004FA0000480.md): Hinge Bracket · corroded · May 25, 2004 · N1524D · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000483](https://openairdocs.org/sdr/2004FA0000483.md): Hinge Bracket · corroded · May 25, 2004 · N195ST · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKES SPANNING COMPLETELY ACROSS THE BEARING BOSS AND OR MOUNTING FEET. PRIMER AND/OR B - [SDR 2004FA0000491](https://openairdocs.org/sdr/2004FA0000491.md): Hinge Bracket · corroded · May 25, 2004 · N1075D · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000494](https://openairdocs.org/sdr/2004FA0000494.md): Hinge Bracket · corroded · May 25, 2004 · N4666T · Cessna 195 · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000500](https://openairdocs.org/sdr/2004FA0000500.md): Hinge Bracket · corroded · May 25, 2004 · N195P · Cessna 190 · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000501](https://openairdocs.org/sdr/2004FA0000501.md): Hinge Bracket · corroded · May 25, 2004 · N3083B · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000502](https://openairdocs.org/sdr/2004FA0000502.md): Hinge Bracket · corroded · May 25, 2004 · N3443V · Cessna 195 · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR 2004FA0000506](https://openairdocs.org/sdr/2004FA0000506.md): Hinge Bracket · corroded · May 25, 2004 · N195KR · Cessna 195A · Ailerons > INSPECTED ORIGINAL MAGNESIUM IB AILERON HINGE BRACKETS AND FOUND SOME OR ALL OF THE FOLLOWING CONDITIONS: SEVERELY CORRODED BRACKET BODY AROUND MOUNT AND BEARING BOSS. CRACKS SPANNING COMPLETELY ACROSS THE BEARING BOSS AND/OR MOUNTING FEET. PRIMER AND/OR BO - [SDR DEM2002F00007](https://openairdocs.org/sdr/DEM2002F00007.md): Spar · cracked · Jun 1, 2002 · N1010D · Cessna 195A · Elevator, Spar/Rib > BOTH ELEVATOR SPARS CRACKED VERTICALLY INITIATING IN BEND RADIUS OF FLANGE TO MOUNT TIP RIB. - [SDR 2002FA0000212](https://openairdocs.org/sdr/2002FA0000212.md): Bracket · corroded · Dec 26, 2001 · N195CN · Cessna 195A · Ailerons > BOTH BRACKETS CRACKED ALL THE WAY ACROSS BEARING BOSS, SEVERELY CORRODED AND MOUNTING LEG OF ONE BRACKET BROKEN OFF. THE PROBLEM WITH THESE BRACKETS IS THE HIGHLY REAACTIVE MAGNESIUM WHICH THEY ARE MADE OF. THIS IS A HIGHLY CRITICAL COMPONENET AND SHOULD BE - [SDR 2002FA0000213](https://openairdocs.org/sdr/2002FA0000213.md): Bracket · cracked · Dec 26, 2001 · N195CN · Cessna 195A · Ailerons > BOTH BRACKETS CRACKED ALL THE WAY ACROSS BEARING BOSS, SEVERLY CORRODED AND MOUNTING LEG OF ONE BRACKET BROKEN OFF. THE PROBLEM WITH THESE BRACKETS IS THE HIGHLY REACTIVE MAGNESIUM WHICH THEY ARE MADE OF. THIS IS A HIGHLY CRITICAL COMPONENT AND SHOULD BE INS ## 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 engine_model_key = 'L4' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/jacobs-l-4/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.