# Service difficulty reports: N420MB, cancelled Apr 3, 2024 A list on [N420MB, cancelled Apr 3, 2024](https://openairdocs.org/deregistered/N420MB-2024-04-03.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR DU4R202310230043](https://openairdocs.org/sdr/DU4R202310230043.md): Skin · cracked · Oct 23, 2023 · N420MB · Airbus A321211 · Fuselage Main, Plate/Skin > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND SEVERAL CRACKED HOLES AT FR 35.3 RH, STR. 29 - 33. S/O 339001 N/R 28618 - [SDR DU4R202310100041](https://openairdocs.org/sdr/DU4R202310100041.md): Unknown · gouged · Oct 9, 2023 · N420MB · Airbus A320* · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND #1 PYLON BOOM LOWER RIB #1 HAS GOUGES. S./O 339001 N/R 28497 - [SDR DU4R202310100040](https://openairdocs.org/sdr/DU4R202310100040.md): Fitting · gouged · Oct 9, 2023 · N420MB · Airbus A320* · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND #1 ENGINE PYLON - FWD PYLON TO ENGINE ATTACHMENT - PYRAMID I/B AND O/B HOLES AT RIB #1 HAS GOUGES. S./O 339001 N/R 28477 - [SDR DU4R202310100039](https://openairdocs.org/sdr/DU4R202310100039.md): Unknown · unknown · Oct 9, 2023 · N420MB · Airbus A320* · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND #1 ENGINE PYLON I/B LOWER ARM HOLE "B" HAS A CRACK INDICATION FROM GOUGES, I/B SIDE OF HOLE IN LOWER ARM LAYER A THE 10:00 O'CLOCK POSITION. S./O 339001 N/R 28127 - [SDR DU4R202310100038](https://openairdocs.org/sdr/DU4R202310100038.md): Fitting · cracked · Oct 9, 2023 · N420MB · Airbus A320* · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND #1 ENGINE PYLON I/B LOWER ARM HOLE "B" HAS A CRACK INDICATION FROM GOUGES, I/B SIDE OF HOLE IN LOWER ARM LAYER A THE 2:00 O'CLOCK POSITION. S./O 339001 N/R 28126 - [SDR DU4R2023101980042](https://openairdocs.org/sdr/DU4R2023101980042.md): Frame · damaged · Oct 6, 2023 · N420MB · Airbus A321211 · Fuselage Main, Frame > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND FR 35.3 R/H STR. 29- 33 UNDER SLIDEBOX HAS 15 EA. OUT OF ROUND HOLES. S/O 339001 N/R 28145 - [SDR DU4R202310050037](https://openairdocs.org/sdr/DU4R202310050037.md): Rib · gouged · Oct 5, 2023 · N420MB · Airbus A321211 · Nacelle/Pylon, Frame/Spar/Rib > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND R/H PYLON TO ENGINE FORWARD FITTING (PYRAMID) AT THE LOWER INBOARD AND OUTBOARD HOLES, JUNCTION TO RIB 1 AND LOWER SPAR HAS GOUGES AND CRACK INDICATIONS. S/O 339001 N/R 28478 - [SDR DU4R202310040036](https://openairdocs.org/sdr/DU4R202310040036.md): Deck Plate · corroded · Oct 4, 2023 · N420MB · Airbus A321211 · Nacelle/Pylon, Main Frame > DURING SCHEDULED INSPECTION, FOUND #2 ENGINE PYLON FWD AND AFT OF PRE-COOLER DECK HAS TWO SPOTS OF SURFACE CORROSION. - [SDR DU4R202310040035](https://openairdocs.org/sdr/DU4R202310040035.md): Spar · corroded · Oct 4, 2023 · N420MB · Airbus A321211 · Nacelle/Pylon, Frame/Spar/Rib > DURING SCHEDULED INSPECTION, FOUND LT PYLON UPPER SPAR HAS CORROSION AT NUMEROUS LOCATIONS FWD OF PRE-COOLER BAY AND IN THE PRE-COOLER BAY. S/O 339001 N/R 28357 - [SDR 2023F00298](https://openairdocs.org/sdr/2023F00298.md): Fitting · cracked · Sep 29, 2023 · N420MB · Airbus A321211 · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION, FOUND #2 ENGINE PYLON LOWER ARM HOLE "B" HAS A CRACK INDICATION FROM GOUGES, OB SIDE OF HOLE IN LOWER PLATE LAYER AT THE 11:00 O'CLOCK POSITION AND IN THE I/B SIDE OF THE HOLE IN THE LOWER ARM LAYER AT THE 2:00 O'CLOCK POSITION. - [SDR DU4R202309280295](https://openairdocs.org/sdr/DU4R202309280295.md): Skin · damaged · Sep 28, 2023 · N420MB · Airbus A321211 · Fuselage Main, Plate/Skin > DURING SCHEDULED INSPECTION, FOUND AIRCRAFT EXTERNAL SKIN HAS DENT AND BUCKLE ON L/H FUSELAGE FR 24 + 11", STR. 32L +3". S/O 339001 N/R 28581. - [SDR DU4R202309280294](https://openairdocs.org/sdr/DU4R202309280294.md): Mount Fitting · damaged · Sep 28, 2023 · N420MB · Airbus A321211 · Engine Mount Section > DURING SCHEDULED INSPECTION, FOUND #2 PYLON ATTACH ENGINE TO PYLON I/B AND O/B HOLES AT RIB 1 HAS DAMAGED HOLES.S/O 339001 N/R #28498 - [SDR DU4R202309280296](https://openairdocs.org/sdr/DU4R202309280296.md): Fitting · cracked · Sep 28, 2023 · N420MB · Airbus A321211 · Nacelle/Pylon Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND #2 ENGINE PYLON INBD LOWER ARM HOLE "B" HAS A CRACK INDICATION FROM GOUGES, O/B SIDE OF HOLE IN LOWER PLATE LAYER AT THE 6 O'CLOCK POSITION. S/O 339001 N/R 28125 - [SDR DU4R202308310030](https://openairdocs.org/sdr/DU4R202308310030.md): Fitting · cracked · Aug 28, 2023 · N420MB · Airbus A321211 · Fuselage Main, Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND AD RELATED TASK, EASA AD 2020-0005, RIGHT WINDSHIELD FRAME, LOWER CENTER POST, CONTINUNITY FITTING HAS A CRACK INDICATION AT 1.125 INCH FROM THE LEFT OF CENTER. S/O 339001 N/R 28420 - [SDR DU4R202308310029](https://openairdocs.org/sdr/DU4R202308310029.md): Fitting · cracked · Aug 28, 2023 · N420MB · Airbus A321211 · Fuselage Main, Structure > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND AD RELATED TASK, EASA AD 2020-0005, LEFT WINDSHIELD FRAME, LOWER CENTER POST, CONTINUNITY FITTING HAS A CRACK INDICATION AT 1.125 INCH FROM THE LEFT OF CENTER. S/O 339001 N/R 28419 - [SDR DU4R2023082800028](https://openairdocs.org/sdr/DU4R2023082800028.md): Skin · dented · Aug 5, 2023 · N420MB · Airbus A321211 · Fuselage Main, Plate/Skin > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND R/H FUSELAGE EXTERIOR SKIN HAS DENT BETWEEN FR 4 - 5, STR. 35R TO 36R. S/O 339001 N/R 28519 - [SDR DU4R2023081400026](https://openairdocs.org/sdr/DU4R2023081400026.md): Skin · dented · Aug 5, 2023 · N420MB · Airbus A321211 · Fuselage Main, Plate/Skin > DURING SCHEDULED INSPECTION AT HAECO LAKE CITY, FLORIDA FOUND R/H FUSELAGE EXTERIOR HAS DENT AT FR32+5", STR. 37R - 38R. S/O 339001 N/R #28520 - [SDR DU4R2023071700025](https://openairdocs.org/sdr/DU4R2023071700025.md): Support Angle · cracked · Jul 7, 2023 · N420MB · Airbus A321211 · Standard Practices/Structures > DURING SCHEDULED INSPECTION AT HAECO, LAKE CITY, FLORIDA FOUND BRACKET ANGLE SUPPORT CRACKED AT R/H WING L/E CAVITY @ RIB 15. S/O 339001 N/R 38315. - [SDR DU4R2023071700026](https://openairdocs.org/sdr/DU4R2023071700026.md): Support Angle · cracked · Jul 6, 2023 · N420MB · Airbus A321211 · Standard Practices/Structures > DURING SCHEDULED INSPECTION AT HAECO, LAKE CITY, FLORIDA FOUND BRACKET ANGLE SUPPORT CRACKED AT L/H WING L/E CAVITY @ RIB 15. S/O 339001 N/R 38316. - [SDR DU4R2023033100007](https://openairdocs.org/sdr/DU4R2023033100007.md): Fitting · corroded · Mar 31, 2023 · N420MB · Airbus A321211 · Fuselage Main, Structure > DURING MAINTENANCE AT HAECO LAKE CITY, FLORIDA FOUND CORROSION AT FS 68 R2 DOOR SILL AFT LOWER CORNER FITTING. S/O 339001 N/R #28293 - [SDR DU4R2023033100006](https://openairdocs.org/sdr/DU4R2023033100006.md): Door Sill · corroded · Mar 31, 2023 · N420MB · Airbus A321211 · Fuselage Main, Structure > DURING SCHEDULED MAINTENANCE AT HAECO, LAKE CITY, FLORIDA FOUND R2 DOOR SILL HAS CORROSION AT FR 68. S/O 339001 N/R 28292 - [SDR DU4R2023033100005](https://openairdocs.org/sdr/DU4R2023033100005.md): Intercostal · cracked · Mar 31, 2023 · N420MB · Airbus A321211 · Passenger/Crew Doors > DURING SCHEDULED MAINTENANCE AT HAECO, LAKE CITY, FLORIDA FOUND R/H FR 16 DOOR STOP FITTING #7 I/B BOTTOM HOLE HAS A CRACK INDICATION ON THE I/B SIDE OF THE INTERCOSTAL FITTING AT THE 10 O'CLOCK POSITION, PROPAGATING O/B 4 MM. S/O 339001 N/R 28080 - [SDR DU4R2023033100004](https://openairdocs.org/sdr/DU4R2023033100004.md): Intercostal · cracked · Mar 31, 2023 · N420MB · Airbus A321211 · Service Doors > DURING SCHEDULED MAINTENANCE AT HAECO, LAKE CITY, FLORIDA FOUND MAIN CABIN L/H FWD ENTRY DOOR, FR 16 DOOR STOP #7 UPPER AND LOWER I/B HOLES HAVE CRACKS IN THE INTERCOSTAL. S/O 339001 N/R 280141 - [SDR DU4R2023033100003](https://openairdocs.org/sdr/DU4R2023033100003.md): Frame · cracked · Mar 31, 2023 · N420MB · Airbus A321211 · Fuselage Main, Frame > DURING SCHEDULED MAINTENANCE AT HAECO, LAKE CITY, FLORIDA FOUND RIGHT FR 16 DOUBLE JOGGLE HOLE #6 HAS A CRACK INDICATION IN FRAME LAYER STARTING AT 4 MM I/B FACE AND EXTENDING O/B 4 MM AT 1:0'CLOCK POSITION AS VIEWED FROM EXTERIOR. S/O 339001 N/R 28054 - [SDR DU4R2023033100002](https://openairdocs.org/sdr/DU4R2023033100002.md): Frame · cracked · Mar 31, 2023 · N420MB · Airbus A321211 · Fuselage Main, Frame > DURING SCHEDULED MAINTENANCE AT HAECO, LAKE CITY, FLORIDA FOUND RIGHT FR 16 DOUBLE JOGGLE HOLE #8 HAS A CRACK INDICATION IN FRAME LAYER STARTING AT I/B FACE AND EXTENDING O/B 4 MM AT 1:0'CLOCK POSITION AS VIEWED FROM EXTERIOR. S/O 339001 N/R 28053 ## 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 n_number = 'N420MB' AND deregistration_id = 'N420MB-2024-04-03' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N420MB-2024-04-03/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.