REMOVED AND REPLACED PROX SWITCH ELECTRONICS UNIT PER AMM 32-09-03/501. PERFORMED GROUND TEST OF PSEU SYSTEM PER AMM 32-61-00. TEST PASSED, NO FURTHER FAULTS AT THIS TIME.
) - [SDR UIEA2024110501080](https://openairdocs.org/sdr/UIEA2024110501080.md): Engine · power loss · Nov 5, 2024 · N406KZ · Boeing 7474KZF · Engine (Turbine/Turboprop) > EGT ROLLBACK #4 ENGINE SHORTLY AFTER TAKE-OFF. AIRCRAFT DIVERTED TO ICN.(R/R #4 ENG C/W ENG RUN UP & LEAK CHECK NORMAL PER AMM 71-00-00, 71-00-02 & TASK CARD 71-099-02-01
) - [SDR UIEA2024092900962](https://openairdocs.org/sdr/UIEA2024092900962.md): Circuit Card · faulted · Sep 29, 2024 · N406KZ · Boeing 7474KZF · Engine Indicating System > STARTER CUTOUT ENG 4 MSG IN FLIGHT(INSPECTED ENGINE STARTER FOR CONDITION AND SERVICING & STARTER VALVE FOR CONDITION. REPLACED N2 SPEED CARD IAW AMM 73-21-00. OPS CHECKS GOOD
) - [SDR UIEA2024061600524](https://openairdocs.org/sdr/UIEA2024061600524.md): Tire · failed · Jun 16, 2024 · N406KZ · Boeing 7474KZF · Tire > TIRE FAILURE ON TAKE OFF. LOSS OF HYD 1 SYS. HYD QTY LOW 1 & HYD PRESS SYS 1 AFTER LEVEL OFF FL290. ON LANDING, HYD SYS 2 & 4 FAIL HYD QTY ON 2 & 4 WENT TO ZERO. REF ITEM M12 & M13, 9 & 10 WHEEL ASSY REPLACED. IAW AMM 29-11-00 REV 110 REF WO 3415330 / N40 - [SDR UIEA2024022700134](https://openairdocs.org/sdr/UIEA2024022700134.md): Bracket · bent · Feb 27, 2024 · N406KZ · Boeing 7474KZF · Landing Gear Position and Warning > DURING CLIMB, EICAS MESSAGE GEAR DOOR DISPLAYED WHEN MOVING GEAR HANDLE FROM UP TO OFF. RETURNED HANDLE TO UP, EICAS MESSAGE CLEARED. DIVERTED TO LAX.(PERFORMED DVI OF RH BODY GEAR PROX SWITCH AND TARGET BRACKET. FOUND TARGET BRACKET BENT. READJUSTED TARGE - [SDR UIEA2023062000652](https://openairdocs.org/sdr/UIEA2023062000652.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Cabin Equipment/Furnishings > BULK CARGO - STA 2160 PARTITION LINER FOUND TORN(
REPAIRED CARRIED OUT AS PER RI-25-54-16324 REV A. NO FURTHER DEFECTS NOTED. PN 453U1553-14
) - [SDR UIEA2023061900651](https://openairdocs.org/sdr/UIEA2023061900651.md): Lamp · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Emergency Lighting > MAIN DECK L1 DOOR CEILING AREA EMERGENCY LT FOUND INOP(MAIN DECK L1 DOOR CEILING AREA EMERGENCY LIGHT RE-LAMPED AND EMERGENCY POWER SUPPLY ( M5170) REPLACED. EMERGENCY LIGHT OPERATION TEST RESULT NORMAL PER AMM 33-51-00
) - [SDR UIEA2023061800650](https://openairdocs.org/sdr/UIEA2023061800650.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Flight Control System > RHW INBOARD AILERON OUTBOARD AFT CORNER SKIN FOUND DELAMINATION(PERFORMED COMPOSITE LAYUP REPAIR AT DELAMINATED AREA IAW SRM 51-70-06 PAR 5G. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061800649](https://openairdocs.org/sdr/UIEA2023061800649.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Flight Control System > RHW INBOARD FORE FLAP LEADING EDGE MID FAIRING SKIN FOUND DELAMINATION(PERFORMED COMPOSITE HOTBOND REPAIR AT DELAMINATED AREA IAW SRM 51-70-07 PAR 5A. NO FURTHER DEFECTS NOTED.
) - [SDR UIEA2023061600646](https://openairdocs.org/sdr/UIEA2023061600646.md): Shear Tie · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Fuselage Internal Mounting Structure > STA 1000 FRONT SPAR SHEAR TIE LBL 57.5 FOUND CRACK(STA 1000 LBL 57.5 FRONT SPAR SHEAR TIE P/N 69B14267U7 REPLACED AND INSTALLED IAW EO 4453C024 PART 5 AND SB 53A2904 FIG 11. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061600645](https://openairdocs.org/sdr/UIEA2023061600645.md): Longeron · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Fuselage Structure (General) > 1EA CRACK WAS FOUND RH STA 1480 LONGERON EXTENSION FTG RADIUS AREA APPROX 3/8"(FUS STA 1480 RH STR 32R TO STR 33R LONGERON EXTENSION FTG REPLACED AND INSTALLED IAW EO 4453A818 PART 4. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061600644](https://openairdocs.org/sdr/UIEA2023061600644.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Fuselage Structure (General) > FX - SKIN STA 2618-2638 STR 50R-51R SKIN DENT DAMAGED(FX - SKIN STA 2618-2638, STR 50R-51R SKIN DENT DAMAGE AREA REPAIRED IAW SRM 53-00-01-2R-1 REPAIR 1. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061500643](https://openairdocs.org/sdr/UIEA2023061500643.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Flight Control System > RHW I/B AFT FLAP I/B L/E FOUND DELAMINATION(PERFORMED REPAIR AT DELAMINATION AREA IAW SRM 51-70-07 PAR 5A. NO FURTHER DEFECTS NOTED.
) - [SDR UIEA2023061500642](https://openairdocs.org/sdr/UIEA2023061500642.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Flight Control System > RHW I/B AFT FLAP LOWER SURFACE FOUND DENTS(PERFORMED REPAIR AT DENTS IAW SRM 51-70-07 PAR 5A. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061500641](https://openairdocs.org/sdr/UIEA2023061500641.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Flight Control System > RHW I/B MID FLAP UPPER SURFACE FOUND DENT(PERFORMED REPAIR AT DENT AREA IAW SRM 51-70-07 PAR 5A. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023061500640](https://openairdocs.org/sdr/UIEA2023061500640.md): Unknown · unknown · Jun 21, 2023 · N406KZ · Boeing 7474KZF · Fuselage Structure (General) > APU FWD FIRE BOTTLE COMP BEHIND FIRE BOTTLE FIRE WALL FOUND CRACK(STA 2658 APU FIRE WALL LHS WEB (P/N: 65B02712-161) CRACK AREA REPAIRED IAW RI-53-83-16310 REV A. NO FURTHER DEFECTS NOTED
) - [SDR UIEA2023040200301](https://openairdocs.org/sdr/UIEA2023040200301.md): Unknown · unknown · Apr 2, 2023 · N406KZ · Boeing 7474KZF · Turbine Engine Air Inlet Section > ENGINE #1 INDICATED HIGH VIBE OF 4.9 CLIMBING THROUGH 15,000' UP TO FL 240.(ACCOMPLISHED FIM TASK ON 71-00 FIGURE 118 STEPS 1 &2, NO DEFECTS FOUND. INSTALLED ACCELEROMETER IAW 77-31-01. PENDING OPS CHECK. ACCOMPLISHED VIBRATION SURVEY PER AMM 71-00-00.
- [SDR UIEA2022111701192](https://openairdocs.org/sdr/UIEA2022111701192.md): Panel · missing · Nov 17, 2022 · N406KZ · Boeing 747400 · Nacelle/Pylon Structure > #3 PYLON FOUND MISSING PANEL 471AL MISSING ON ARRIVAL(INSTALLED TEMP PANEL PER EO 4454A089 AND PERFORMED PART DEPARTURE INSPECTION PER AMM 05-51-58-200-801.) - [SDR UIEA2022102301171](https://openairdocs.org/sdr/UIEA2022102301171.md): Line · perforated · Oct 23, 2022 · N406KZ · Boeing 7474KZF · Landing Gear System > HYDRAULIC PRESS #4 SYSTEM IN FLIGHT.(FOUND RIGID LINE ON RIGHT WING MLG RETRACT ACTUATOR PERFORATED. REMOVED RIGID LINE AND INSTALLED TEMPORARY FLEX LINE PER ATLAS AIR GMM 3.24.1. TRANSFERRED TO DMI 173812 PER NON-MEL, DUE DATE APR 15, 2024.
) - [SDR UIEA2022081400859](https://openairdocs.org/sdr/UIEA2022081400859.md): Engine · vibration · Aug 13, 2022 · N406KZ · Boeing 7474KZF · Powerplant System > ENGINE 3 FAN VIBRATION 4.3 - 5.0 IN CLIMB(PERFORMED BOROSCOPE INSPECTION AND TRIM BALANCE REF LOG PAGE 1194652 M5 & M6.
/M5: PERFORMED #3 ENG BSI THEN OPS CHECK NORMAL AND RE-INSTALLED INSPECTION PORT (B1-0, B1-3, B4-3, B4-4, B4-2) AND N2 CRANK PAD - [SDR UIEA2022021600138](https://openairdocs.org/sdr/UIEA2022021600138.md): Pdu · none · Feb 14, 2022 · N406KZ · Boeing 7474KZF · Trailing Edge Flap Control System > INDICATION AND OTHER EVIDENCE OF LE RH MIDSPAN FLAP, AT CRUISE AFTER DEPARTURE, FLAP DEPLOYMENT AT CRUISE.(
REMOVED AND REPLACED R2 LE PDU ASSEMBLY IAW AMM 05-51-04. INSPECTION COMPLETED, NO DEFECTS NOTED.
/) - [SDR UIEA2021081401802](https://openairdocs.org/sdr/UIEA2021081401802.md): Actuator · faulted · Aug 13, 2021 · N406KZ · Boeing 7474KZF · Landing Gear Actuator > GEAR TILT EICAS FOR RH BODY GEAR GEAR MONITOR, GEAR TILT STATUS(
R BODY GEAR TRUCK POSITIONING ACTUATOR REPLACED AND HYD BLEEDING AND HYD FUSE RESET TO USUAL COND. PERFORMED IAW AMM 32-13-15/401.
/REMOVED AND REPLACED THE HYD HOSE FOR THE R BODY GE - [SDR UIEA2021062501411](https://openairdocs.org/sdr/UIEA2021062501411.md): Skin · debonded · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Ailerons > DISBOND - SKIN, LOWER FACE OF R/H WING T/E INBD AILERON LOWER SKIN, WBL 508.(
REPAIR DISBOND - SKIN, LOWER FACE OF R/H WING T/E INBD AILERON LOWER SKIN WBL 508. PLEASE SEE THE JOB CARD ATTACHING SHEET CNTRL NO. 0238229 FOR REPAIR DETAIL. CONDITION CHECK IS S - [SDR UIEA2021062501416](https://openairdocs.org/sdr/UIEA2021062501416.md): Skin · debonded · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Ailerons > DISBOND - SKIN, OUTBD SIDE AFT EDGE OF R/H WING INBD AILERON, WBL 515(
REPAIR DISBOND - SKIN, OUTBD SIDE AFT EDGE OF R/H WING INBD AILERON UPPER SURFACE. PLEASE SEE THE JOB CARD ATTACHING SHEET CNTRL NO. 0238254 FOR REPAIR DETAIL. CONDITION CHECK IS SATISFAC - [SDR UIEA2021062501417](https://openairdocs.org/sdr/UIEA2021062501417.md): Skin · damaged · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Cargo/Baggage Doors > AFT CARGO SKIN LOWER EDGE EXISTING TRIM BETWEEN STA 1816 - STA 1822.8.(
ACCOMPLISHED AFT CGO DOOR EDGE REPAIR IAW EI NO T2021A52M-1540 REV 2. JOB COMPLETED AND CONDITION CHECK NORMAL.
) - [SDR UIEA2021062501418](https://openairdocs.org/sdr/UIEA2021062501418.md): Floor Support · damaged · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Fuselage Miscellaneous Structure > MAIN DECK FLOOR STRUCTURE BETWEEN BS 480 AND 500 RBL 96. ACCOMPLISHED EI NO T2021A53-1575 REV 1. JOB COMPLETED AND CONDITION CHK NORMAL - [SDR UIEA2021062501419](https://openairdocs.org/sdr/UIEA2021062501419.md): Keelbeam · corroded · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Fuselage Main, Keel > CORROSION - KEEL BEAM, LOWER CHORD UPR FLANGE UPR SURFACE AT STA 1387 LBL9.(ACCOMPLISHED EI NO T2021A53M-1573 REV 1. JOB COMPLETED AND CONDITION CHECK NORMAL.
) - [SDR UIEA2021062501420](https://openairdocs.org/sdr/UIEA2021062501420.md): Keelbeam · corroded · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Fuselage Main, Keel > CORROSION - KEEL BEAM, LOWER CHORD UPR FLANGE UPR SURFACE AT STA 1270, RBL 9.(ACCOMPLISHED EI NO T2021A53M-1573 REV 1 AND THIS EI ATTACHING WITH T/C: 5915682 (451). JOB COMPLETED AND CONDITION CHECK NORMAL.
) - [SDR UIEA2021062501421](https://openairdocs.org/sdr/UIEA2021062501421.md): Keelbeam · corroded · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Fuselage Main, Keel > CORROSION - KEEL BEAM, LOWER CHORD UPPER FLANGE UPPER SURFACE AT STA 1375 RBL 9(ACCOMPLISHED EI NO T2021A53M-1573 REV 1 AND THIS EI ATTACHING WITH T/C NO: 5915682 (451). JOB COMPLETED AND CONDITION CHECK NORMAL.
) - [SDR UIEA2021062501422](https://openairdocs.org/sdr/UIEA2021062501422.md): Connector · disconnected · Jun 10, 2021 · N406KZ · Boeing 7474KZF · Electrical Power System Wiring > IDG-3 FAILED DISCONNECT(IAW WDM 24-11-13 REV 28 PERFORM WIRING CHK, FOUND W5302-007-16 INSULATION LOW. IAW WDM 24-11-13 REV 28 SWPM 20-00-12, 20-63-13, 20-61-11, 20-10-11 REV 76 REPLACE WIRE W5302-007-16. CONDITION CHK NORMAL. IAW WDM 24-11-13 REV 28 PERFOR - [SDR UIEA2020040600707](https://openairdocs.org/sdr/UIEA2020040600707.md): Controller · malfunctioned · Apr 2, 2020 · N406KZ · Boeing 7474KZF · Pneumatic Distribution System > #4 ENG BLEED OVERHEAT MESSAGE(
REMOVED AND REPLACED #4 PRV AND #4 PRV CONTROLLER AND THEN PERFORMED OPERATIONAL CHECK PER AMM 36-11-19/401 AND AMM 36-11-20/401 (PRV OFF PART: PN 802170-12, SN 98080594).
) - [SDR UIEA2019101105700](https://openairdocs.org/sdr/UIEA2019101105700.md): Flap Track · corroded · Oct 19, 2019 · N406KZ · Boeing 7474KZF · Trailing Edge Flaps > EVIDENCE OF LIGHT SURFACE CORROSION ON ALL EIGHT FLAP TRACKS.(FOR #4 AND #5 FLAP TRACK REPAIR, REF EI NO. T2019A57M-3693 REV. 1 AND T2019A57M-3700 REV.1. REFERENCE J/C ATTACHING SHEET FOR REPLACEMENT OF FLAP TRACKS #1, #2, #3, #6, # 7, AND #8. CONDITION CHE - [SDR UIEA2019101315699](https://openairdocs.org/sdr/UIEA2019101315699.md): Rub Strip · corroded · Oct 12, 2019 · N406KZ · Boeing 7474KZF · Engine Thrust Reverser > NR 2 ENG R/H THRUST REVERSER CORE COWL ON INNER AFT EDGE HAS WEAR STRIP CORRODED. REMOVED DAMAGED PARTS IAW SRM 51-40-02 REV. 86. INSTALLED NEW PARTS IAW SRM 51-40-02 REV. 86 AND IPC 78-32-22 REV. 82. JOB COMPLETED AND CONDITION CHECKS NORMAL. - [SDR UIEA2019101315695](https://openairdocs.org/sdr/UIEA2019101315695.md): Skin · damaged · Oct 12, 2019 · N406KZ · Boeing 7474KZF · Ailerons > OUTBOARD EDGE OF R/H WING INBD AILERON, T/E SKIN, WBL 515 DAMAGED. CUT OUT THE DAMAGED MATERIAL AND CLEANED. MEASURED THE DAMAGED AREA, L = 1.5", W = 0.25", DEPTH = 2 PLIES. BOND REPAIR PLIES, USED WET LAYUP IAW SRM 57-60-01-2R-1, REPAIR 1, AND SRM 51-70-06- - [SDR UIEA2019101315696](https://openairdocs.org/sdr/UIEA2019101315696.md): Skin · debonded · Oct 12, 2019 · N406KZ · Boeing 7474KZF · Ailerons > OUTBOARD EDGE OF RT WING, INBD AILERON LOWER SKIN, WBL 515 SKIN DEBONDED. CUT OUT THE DAMAGED MATERIAL AND CLEANED. MEASURED THE DAMAGED AREA (L = 1", W = 0.3", D = 1 PLY). BOND REPAIR PLIES (L = 5", W = 5"), USED PREPREG LAYUP WITH FILM ADHESIVE. IAW SRM 57- - [SDR UIEA2019101315697](https://openairdocs.org/sdr/UIEA2019101315697.md): Rub Strip · corroded · Oct 12, 2019 · N406KZ · Boeing 7474KZF · Nacelle/Pylon, Main Frame > NR 3 ENG LT CORE COWL ON L/E HAS WEAR STRIP CORRODED AT THE 9 O'CLOCK POSITION. REMOVED DAMAGED PARTS IAW SRM 51-40-02 REV. 86. INSTALLED NEW PARTS IAW GOODRICH CMM 71-13-23 REV. 41 AND SRM 51-40-02 REV. 86. JOB COMPLETED AND CONDITION CHECKS NORMAL. - [SDR UIEA2019101315698](https://openairdocs.org/sdr/UIEA2019101315698.md): Rub Strip · corroded · Oct 12, 2019 · N406KZ · Boeing 7474KZF · Engine Thrust Reverser > WEAR STRIP ON NR 3 ENG LT THRUST REVERSER, NEAR UPPER REAR CORRODED. REMOVED DAMAGED WEAR STRIP IAW SRM 51-40-02 REV. 86. INSTALLED NEW WEAR STRIP IAW SRM 51-40-02 REV. 86 AND IPC 78-32-21 REV. 82. JOB COMPLETED AND CONDITION CHECK NORMAL. ## 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 = 'N406KZ' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N406KZ/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.