# Service difficulty reports: N27959 A list on [N27959](https://openairdocs.org/aircraft/N27959.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR CALA2026101920444](https://openairdocs.org/sdr/CALA2026101920444.md): Light · inoperative · Oct 17, 2026 · N27959 · Boeing 7879 · Emergency Lighting > EMERGENCY EXIT PATH LIGHTS ROSE 51 THROUGH 56 INOPERATIVE. LEFT AND RIGHT SIDE OF AIRCRAFT EMERGENCY EXIT PATH LIGHTS ROSE 51 THROUGH 56 INOPERATIVE LEFT AND RIGHT SIDE OF AIRCRAFT CHKD,OPS OK. - [SDR CALA2026082118770](https://openairdocs.org/sdr/CALA2026082118770.md): Acm · faulted · Aug 15, 2026 · N27959 · Boeing 7879 · Cabin Cooling System > AFTER ENG SHUTDOWN RT PACK ACM FIM DMC-B787-A-21-50-F2-69A-421A-A, FOLLOWED, MAINT MSG 21-65213 LATCHED. RAN SYSTEM TEST IAW FIM AND RT ACM HAS FAILED. STARTING MEL PROCEDURE 2152DB DEACTIVATED RT PACK ACM IAW DDG 21-52-03, AMM DMC-B787-A-21-00-00-58A-721B-A. - [SDR CALA2026081718670](https://openairdocs.org/sdr/CALA2026081718670.md): Acm · failed · Aug 15, 2026 · N27959 · Boeing 7879 · Cabin Cooling System > STRONG ACRID ODOR WHEN APU RUNNING. CREW DEBRIEFED. ON ENG SHUTDOWN, RT PACK ACM FAILED AND CAUSED BURNING ODOR IN CABIN ALONG WITH ASSOCIATED STATUS MESSAGES. TESTING SHOWED RT ACM FAILED & MEL APPLIED ON LP 9971449. CONDITIONAL INSPECTION FOR SMOKE/ODOR IA - [SDR CALA2026060816866](https://openairdocs.org/sdr/CALA2026060816866.md): Light · inoperative · Jun 5, 2026 · N27959 · Boeing 7879 · Emergency Lighting > FOUND SEAT 11F EMERGENCY LIGHT INOP. SDR SEAT 11F AFT LIGHT ASSY REPLACED AND INSTALLATION TEST PERFORMED FOUND SATIS. EMER LIGHT OPERATIONAL TEST PERFORMED SATIS.FOR DETAILS REFER TO SIAEC NRC ELE0006 SVO:40372845 - [SDR CALA2026060516853](https://openairdocs.org/sdr/CALA2026060516853.md): Light · inoperative · Jun 4, 2026 · N27959 · Boeing 7879 · Emergency Lighting > FOUND SEAT 54D EMERGENCY LIGHT INOPERATIVE. REPLACED SEAT 54D EMERGENCY LIGHT ASSY AS PER AMM B787-A-33-51-0 6-00A-520A-A,B787-A-33-51-06-00A-720A-A.OPERATIONAL TEST OF SEAT 54D EMERGENCY LIGHT PASSED.WORK ACCOMPLISHED BY V941780 IN SIAEC SIN HGR. - [SDR CALA2026041015261](https://openairdocs.org/sdr/CALA2026041015261.md): Housing · damaged · Apr 9, 2026 · N27959 · Boeing 7879 · Emergency Lighting > PASSENGER SEAT EMERGENCY PATH LIGHTING (EPL) - HOUSING MOUNTED IS DAMAGED AT POSITION 49F. REMOVED AND REPLACED THE EPL HOUSING MOUNTED AT POSITION 49F AS REF AIPC 25-25-11-08. ITEM GOOD FOR SERVICE. - [SDR CALA2026011212871](https://openairdocs.org/sdr/CALA2026011212871.md): Resistor · burned · Jan 7, 2026 · N27959 · Boeing 7879 · Electrical Power System Wiring > MANY STATUS MSGS NITRO GEN SYS ELEC ENG START R2. FOUND R2 ATRUC TRIPPED ON ESIC. PRESENT LEG FAULT MAINTENCE MSG 24-17504 RELATED TO THE MULTIPLE STATUS MESSAGES. FOUND R2 SOFT START RESISTOR (R2 SSRA) BURNED (DAMAGED) IN THE P200 PANEL. FOLLOWED FIM 24-30 - [SDR CALA2025081207647](https://openairdocs.org/sdr/CALA2025081207647.md): Elec Connector · faulted · Aug 5, 2025 · N27959 · Boeing 7879 · Communications System Wiring > BURNING ELECTRICAL SMELL AT SEAT 11L AND 12L AREA. BOTH POWER INOP AT 11L AND 12L.CONFIRMED FAULT. CHECKED ALL LRUS/ CONNECTORS BEHIND 11L. NFF. ONLY NOTED THAT THERE WAS LOTS OF DUST ON LRUS AND ALL FOUND BURNING SMELL COMING FROM INPUT PORT (J3) OF DC SEB.. - [SDR CALA2025080807519](https://openairdocs.org/sdr/CALA2025080807519.md): Seal · debonded · Aug 3, 2025 · N27959 · Boeing 7879 · Fuselage Main, Structure > CAPT LEFT SIDE WINDOW CONTINUOUS RATTLING NOISE FOUND. L1 WINDOW UPPER HUMP SEAL DISBONDED. APPLIED SPEED TAPE PER TEMPORARY REPAIR REF DMC-B787-A-56-11-00-03A-663A-A. - [SDR CALA2025041803985](https://openairdocs.org/sdr/CALA2025041803985.md): Pcu · malfunctioned · Apr 17, 2025 · N27959 · Boeing 7879 · Drag Control System > PERFORMED ECRA 2761-01232 FOR #12 SPOILER PCU, RESISTANCE MEASURED 942 OHMS, FAILED RESISTANCE CHECK. NEED TO REPLACE #12 SPOILER PCU. REPLACE THE PCU PER AMM 27-61-08-01A-520A(-720A) THEN CONTINUE WITH ECRA STEP 6. A 30 DAY DIP MAY BE USED IF NEEDED. REMOVED - [SDR CALA2025020202161](https://openairdocs.org/sdr/CALA2025020202161.md): None · none · Jan 30, 2025 · N27959 · Boeing 7879 · Standard Practices/Structures > CREW REPORTS SMELL OF SMOKE FROM CELL PHONE AT SEAT 6D. PHONE SMOKE CONTAINED VIA HALLON AND WATER SUPPRESSION METHODS. PHONE CONTAINED IN THERMAL CONTAINMENT BAG. ON ARRIVAL PHONE, PHONE AND THERMAL CONTAINMENT BAG CONFISCATED BY LOCAL FIRE AUTHORITY. SEE PIC - [SDR CALA2024052001501](https://openairdocs.org/sdr/CALA2024052001501.md): Pin · failed · May 17, 2024 · N27959 · Boeing 7879 · Landing Gear Doors > ON WALKAROUND FOUND DAMAGE TO ACFT STRUCTURE AND PANEL AFT OF RT MLG DOOR PANEL 198BR REMOVED DAMAGE TO THE BULLNOSE BARRIER PANEL PER ECRA 3212-01133 PART 1B. HFEC WAS NOT ACCOMPLISHED SO IT WILL BE ON DIP TO ACCOMPLISH WITHIN 15 DAYS ON LP 7995197. - [SDR CALA2024013000262](https://openairdocs.org/sdr/CALA2024013000262.md): Circuit Card · faulty · Jan 27, 2024 · N27959 · Boeing 7879 · Landing Gear System Wiring > NOSE WHEEL STEERING CHAN NOSE WHEEL STEERING SYSTEM ONE OR TWO HAS FAILED. INHIBIT THIS MESSAGE IF BOTH SYSTEMS ARE FAILED AND MESSAGE S32465 IS ACTIVE. SET THIS MESSAGE ALSO IF THE SIGNAL IS UNFRESH OR INVALID. FIM TASK REF: 31-90-F8-01A-421B-A CMC MSG# 2439 - [SDR CALA2023060701778](https://openairdocs.org/sdr/CALA2023060701778.md): Controller · inoperative · Jun 3, 2023 · N27959 · Boeing 7879 · Electrical Power System > ELEC MC CAC L1 / START L1 STATUS MSG DDG 24-15-01 COMPLIED WITH, CMSC-L1 CHANEL 1 DEACTIVATED, PLACED ON MEL REQUEST MEL TOMC APPROVED MTC MSG 24-29501 ACTIVE L1 CAC CMSC REMOVED IAW MM 24-15-02. LEFT 1(L1) COMMON MOTOR START CONTROLLER REMOVED IAW AMM.COMMO - [SDR CALA2022101802845](https://openairdocs.org/sdr/CALA2022101802845.md): Blades · damaged · Oct 18, 2022 · N27959 · Boeing 7879 · Air Conditioning System > PACK ACM R STATUS MESSAGE SEE PIX FOUND DAMAGED BOOT AND 2 O-RING ON RIGHT CAC DUCTING SYSTEM. ROD ASSY 6) FLIGHT DECK SUPPLY DUCT.. FOUND BLADES DAMAGED AND METAL SHAVINGS INSIDE THE CAC INSTALLED CAC. COMPONENTS THAT STILL REQUIRE INSTALLLATIONS ARE 1) 90 DE - [SDR CALA2020021200409](https://openairdocs.org/sdr/CALA2020021200409.md): Latch · broken · Feb 10, 2020 · N27959 · Boeing 7879 · Escape Slide > DOOR 4L BUSTLE SECURING LATCH BROKEN. DOOR BUSTLE SUPPORT BRACKET BROKEN, MEL 5211N COMPLIED WITH. CS AND ROWS 35-41 DEF. EMERGENCY EXIT SIGNS, FLOOR PROX LIGHTS AND INFORMED 57 SEATS ARE NOT TO BE OCCUPIED ROWS 35-40 A,B,C,J,KL OBSCURED AND ALL OTHER MEL REQU - [SDR CALA2018082001824](https://openairdocs.org/sdr/CALA2018082001824.md): O-Ring · leaking · Aug 17, 2018 · N27959 · Boeing 7879 · Aircraft Fuel Distribution System > FLUID LEAKING FROM THE LT L/E DRAIN, JUST INBD OF ENGINE. LEAKAGE CONFIRMED FROM LT ENG MAIN FUEL SUPPLY LINE COUPLING AT FRONT SPAR ADJ IFSS 517 O/B OF ENG PYLON. REPLACED COUPLING O-RINGS IAW AMM 20-10-19-00A-720A, PRESSURE CHECKED AND NO LEAKS EVIDENT ON - [SDR CALA2017101603646](https://openairdocs.org/sdr/CALA2017101603646.md): Connector · broken · Oct 16, 2017 · N27959 · Boeing 7879 · Light System Wiring > EMERGENCY LIGHTS AT SEAT 1D FWD AND 7D FWD INOPERATIVE. FOUND CONNECTORS FROM SEAT HARNESS TO LIGHT ASSY BROKEN IAW AMM 33-51-06-00A-520A. TERMINATED THE CONNECTORS. OPS CHECKED GOOD IAW WMD DMC-B787-A-33-51-14-01A-051A-D. - [SDR CALA2017032400696](https://openairdocs.org/sdr/CALA2017032400696.md): Unknown · odor · Mar 24, 2017 · N27959 · Boeing 7879 · Air Distribution System > FLIGHT ATTENDANTS REPORTED AN ODOR OF BURNED ELECTRICAL OR PAPER IN THEIR BUNK AREA. IT WAS ABOUT 2 1/2 HOURS AFTER TAKE OFF AND AFTER THEY LAID DOWN ODOR DISAPATED 1/2 HOUR LATER. ACCOMPLISHED A SMOKE OR FUMES IN CABIN - AFT FLT CREW REST AREA FAULT ISOLATION ## 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 = 'N27959' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N27959/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.