N17231
Operators of this aircraft
Who operated this tail, and how firmly we know it.
| Operator | Role | Period | Basis |
|---|---|---|---|
| MESA AIRLINES, INC. (MASA) | Operator | on 2004-04-17 | Operator named in NTSB report |
Accident & incident history
Operated by Mesa Airlines, Inc. (per NTSB report)
Maintenance disclosures
Service Difficulty Reports filed with the FAA for this airframe. Filing is largely voluntary — the number of reports is not a measure of reliability. To verify a report, search its control number at the FAA SDRS site.
65 reports on file, 1998-11-18 – 2009-10-09.
Part: WIRE HARNESS — DEFECTIVE (NLG) · airframe 29,920 hrs · 22,672 cycles
ASH FLT 2781 PHX - PSP. CREW REPORTED UPON TAKEOFF, HAD A GEAR UP DISAGREE GEAR WARNING AND NOSE WARNING MESSAGE. MX R2 NLG DOOR HARNESS.
Part: ACTUATOR — OUT OF RIG (NLG DOOR)
ASH FLT 2920 PHX TO COS RTF DUE TO LANDING GEAR DISAGREE. MX RIGGED NLG DOOR ACTUATORS AND PROX SENSOR.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 29,652 hrs · 22,420 cycles
ASH FLT 2982 PHX-SLC. CREW REPORTED THE NR 2 EMERGENCY CEILING FLOOD LIGHT IS INOPERATIVE. MX RELAMPED EMERGENCY LIGHT.
Part: ACTUATOR — DEFECTIVE (NLG) · airframe 29,589 hrs · 22,400 cycles
ASH FLT 2832 PHX-RON. CREW REPORTED A GEAR DISAGREE WARNING MESSAGE AND NOSE DOOR WARNING MESSAGE ON FINAL. MX REPLACED NLG DOOR ACTUATOR AND ADJUSTED PROX SENSORS.
Part: DOOR — OUT OF RIG (LANDING GEAR) · airframe 29,546 hrs · 22,357 cycles
ASH FLT 2778 PHX-PSP. CREW REPORTED UPON LANDING GEAR RETRACTION, EICAS MESSAGE "NOSE GEAR DOOR" WARNING ILLUMINATED. CREW ALSO REPORTED THAT IT APPEARED THAT THE NOSE GEAR DOORS WERE CYCLING OPEN/CLOSED. CREW ELECTED TO RETURN TO THE FIELD. CREW DID DECLARE AN EMERGENCY. AIRCRAFT LANDED SAFELY WITHOUT FURTHER INCIDENT. MX RIGGED THE DOORS.
Part: CONNECTOR — LOOSE (CABIN) · airframe 29,476 hrs · 22,299 cycles
ASH FLIGHT 2925 PHX - ICT. REPORTED THAT THE FLOOR LEVEL EMERGENCY ESCAPE PATH LIGHTING AFT OF ROW 8 WAS INOP. MX SECURED THE LIGHTING POWER SUPPLY CONNECTOR.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 29,012 hrs · 21,903 cycles
ASH FLT 2903 PHX TO GJT. RT OVERWING EMERGENCY EXIT LIGHT INOP. MX PERFORMED OPS CHECKS. COULD NOT DUPLICATE.
Part: MECHANISM — OUT OF ADJUST (SERVICE DOOR) · airframe 28,845 hrs · 21,779 cycles
ASH FLT 2925 PHX-ICT. SERVICE DOOR WILL NOT OPEN. MX ADJUSTED DOOR LOCKING MECHANISM AND OPS CHECKED.
Part: CONNECTOR — DEFECTIVE (CABIN) · airframe 28,579 hrs · 21,575 cycles
ASH 2783 COS. SECTION OF FLOOR PATH LIGHT INOPERATIVE. AIRCRAFT FERRIED TO PHX AND MX REPLACED CONNECTOR.
Part: CONNECTOR — LOOSE (CABIN) · airframe 28,426 hrs · 21,851 cycles
ASH FLT 2743 PHX-PSP. CAPTAIN REPORTED THAT ROW 8 LOWER EMERGENCY LIGHT WAS INOP. MX RESECURED CONNECTOR AT ORANGE FLOOR TRACK STRIP.
Part: SKIN — DAMAGED (FUSELAGE)
MAJOR REPAIR. FUSELAGE SKIN LIGHTNING STRIKE DAMAGE REPAIR.
Earlier reports · 1998–2008 · 54 reports
2008
Part: LENS — MISSING (EMERGENCY LIGHTS) · airframe 27,897 hrs · 21,006 cycles
ASH 2711 PHX - CREW REPORTED A RT OVERWING EMERGENCY EXIT LIGHT LENS MISSING. MX REPLACED THE LENS.
Part: ACM — MALFUNCTIONED (NR 1) · airframe 27,844 hrs · 20,956 cycles
ASH FLT 2925 FAT-PHX. CAPTAIN REPORTED SMOKE IN FLIGHT DECK CAUSED BY LT PACK. MX REMOVED AND REPLACED NR 1 ACM, OPS CHECKED GOOD.
Part: LIGHT — MALFUNCTIONED (CABIN)
FLT 2986 - EMERGENCY LIGHT INOPERATIVE. MX INSPECTED AND PERFORMED SYSTEMS OPS CHECK. OPS CHECKED NORMAL.
Part: CONNECTOR — LOOSE (CABIN)
ASH 2704 PHX LOWER OVERWING EXIT LT INOP. MX RESECURED A LOOSE CONNECTOR ONT HE LIGHT ASSY.
Part: STRIP — LOOSE (COCKPIT DOOR) · airframe 26,808 hrs · 20,120 cycles
ASH 2825 PHX - REPORTED HAVING TROUBLE CLOSING THE COCKPIT DOOR. MX RE-SECURED A LOOSE TRIM STRIP THAT WAS OBSTRUCTING THE DOOR.
Part: DOOR — BROKEN (MASK BOX) · airframe 26,394 hrs · 19,803 cycles
ASH FLT 2737 PHX-PSP, F/O'S O2 MASK DOOR BROKEN. MX REPLACED THE MASK BOX ASSEMBLY.
Part: SIGN — MALFUNCTIONED (CABIN) · airframe 26,398 hrs · 19,807 cycles
ASH FLT 2824 PHX-TUS, RT OVERWING EMERGENCY EXIT FLOOR LEVEL SIGN LIGHTS INOP. MX RESET THE SYSTEM AND THE LIGHT OP CHECKED GOOD.
Part: TRIM SWITCH — FAULTY (COCKPIT) · airframe 26,270 hrs · 19,703 cycles
FLT 2889, BFL-PHX. STAB TRIM RUNAWAY 1000 FT OFF GROUND. NOSE OF AC PITCHED DOWN. DECLARED AN EMERGENCY AND RTF. MX REPLACED THE F/O'S STAB TRIM SWITCH.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 26,077 hrs · 19,526 cycles
ASH 2796 PHX - REPORTED THE AFT CELING FLOOD LIGHT INOP. MX REPLACED THE FLOOD LIGHT.
2007
Part: CONTROL ARM — DAMAGED (SERVICE DOOR) · airframe 25,943 hrs · 19,405 cycles
ASH FLT 2985 PHX - SLC, SERVICE DOOR IS HARD TO OPEN. REMOVED AND REPLACED UPPER CONTROL ARM, OPS GOOD.
Part: LAMP — INOPERATIVE (EMERGENCY LIGHTS) · airframe 25,389 hrs · 18,931 cycles
ASH FLT 2818 DSM - OVERNIGHT, LT NR 5 EXTERNAL EMERGENCY LIGHT INOP. MX REPLACED THE LAMP AND IT OP CHECKED GOOD.
Part: LAMP — INOPERATIVE (EMERGENCY LIGHTS) · airframe 25,336 hrs · 18,890 cycles
ASH FLT 2872 SBP - PILOT REPORTED ONE CEILING LEVEL EMERGENCY FLOOD LIGHT INOPERATIVE. RELAMPED, OPS GOOD.
Part: LIGHT — MALFUNCTIONED (CABIN) · airframe 24,769 hrs · 18,449 cycles
ASH 2765 PHX. EMERGENCY PATH LIGHTING AT ROW 9 INOP. OPS CHECKED NORMAL.
Part: SMOKE DETECTOR — MALFUNCTIONED (CARGO BAY) · airframe 24,229 hrs · 18,050 cycles
ASH 2777 PHX - CARGO SMOKE WARNING AND CARGO FAN FAIL CAUTION ON GROUND. MX REPLACED THE CARGO SMOKE DETECTOR AND THE FAN, OP CHECKED GOOD.
Part: WIRE — DISCONNECTED (CABIN) · airframe 23,889 hrs · 17,782 cycles
ASH 2743 COS. REPORTED ONE FLOOR PATH LIGHT SEGMENT INOP. MX RECONNECTED WIRE.
Part: SEAL — LACK OF LUBE (SERVICE DOOR) · airframe 23,627 hrs · 17,566 cycles
ASH 2925 MYR - SERVICE DOOR STIFF TO OPEN. MX LUBED DOOR SEAL, OPS CHECKED GOOD.
2006
Part: CONNECTOR — LOOSE (CABIN) · airframe 23,167 hrs · 17,200 cycles
ASH 2750 PHX. LAST HALF OF FLOOR EMERGENCY LIGHTS INOP. MX SECURED A LOOSE ELECTRICAL CONNECTION, OPS CHECK GOOD.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 23,012 hrs · 17,080 cycles
ASH 2718 PHX. OVERHEAD EMERGENCY LIGHT INOP. MAINTENANCE RELAMPED, OPS NORMAL.
Part: CAUTION MESSAGE — FALSE ACTIVATION · airframe 21,576 hrs · 16,009 cycles
ASH 6239 PHX - FLIGHTS SPOILERS AND OUTBOARD SPOILERON FAULTS. MX RESET THE SECU'S. NO FURTHER ACTION REQUIRED.
Part: FLAP — MALFUNCTIONED (WING) · airframe 21,536 hrs · 15,968 cycles
ASH 6339 BFL - ON POWER UP, CREW GOT FLAPS FAIL. MX COMPLIED WITH PART A.
Part: ACTUATOR — MALFUNCTIONED (YAW DAMPER) · airframe 20,886 hrs · 15,486 cycles
ASH 6156 COS - YAW DAMP 2 THAT FAULTED AND WOULD NOT RE-ENGAGE. MX CLEANED NR 2 YAW DAMP SWITCH AND R2 ACTUATOR. OP'S CHECK GOOD.
Part: CONNECTOR — DIRTY (YAW DAMPER) · airframe 20,876 hrs · 15,476 cycles
ASH 6595 COS - YAW DAMP WILL NOT ENGAGE. MX CLEANED THE CONNECTOR AT THE SWTICH PANEL. OP'S CHECK NORMAL.
Part: SWITCH — DIRTY (YAW DAMPER) · airframe 20,864 hrs · 15,469 cycles
ASH RON LAS - YAW DAMP INOP AND WILL NOT RE-ENGAGE. CLEANED NR 2 YAW DAMP SWITCH.
Part: YAW DAMPER — MALFUNCTIONED · airframe 20,863 hrs · 15,467 cycles
ASH 6239 PHX - YAW DAMP INOP AND WILL NOT RE-ENGAGE. MX RESET. OP'S CHECK GOOD.
Part: CIRCUIT CARD — MALFUNCTIONED (YAW SYS) · airframe 20,848 hrs · 15,455 cycles
ASH 6237 PHX - YAW DAMP NR 2 WONT'T ENGAGE. MAINTENANCE RERACKED FCC NR 2. OPS GOOD.
Part: HANDLE — LOOSE (SERVICE DOOR) · airframe 20,572 hrs · 15,263 cycles
ASH 6263 PHX, SERVICE DOOR HANDLE STOW HANDLE LOOSE. MAINTENANCE RESECURED STOW HANDLE.
Part: BPSU — FAILED (TE FLAPS) · airframe 20,496 hrs · 15,156 cycles
ASH 6372 YUM, FLAPS FAIL CAUTION MESSAGE. PART A COULD NOT BE ACCOMPLISHED, THE SYSTEM WOULD NOT RESET. A/C FERRIED TO PHX WHERE MAINTENANCE REMOVED AND REPLACED BPSU.
2005
Part: LIGHT — INOPERATIVE (CABIN) · airframe 18,991 hrs · 14,108 cycles
ASH 6713 PHX. FLOOR ELECTROLUMINESCENT PROXIMITY EMERGENCY ESCAPE PATH LIGHT WITHOUT ORANGE OVERLAY WAS FOUND TO BE INOP. MX RELAMPED.
Part: BULB — INCORRECT (GALLEY LIGHT) · airframe 18,903 hrs · 14,046 cycles
ASH 6078 PHX. AS ACFT WAS BOARDING F/A NOTICED SMOKE IN CABIN NEAR PAX DOOR. MX FOUND GALLEY LIGHTS TO BE LAMPED WITH INCORRECT BULBS, IT CAUSED AN OVERHEAT SITUATION AND DAMAGED 1 OF THE LIGHT ASSY. MX RELAMPED 2 OF 4 BULBS AND PLACED 2 ON NAI. ACFT CONTINUED OPERATIONS. LATER MAINTENANCE REPLACED THE GALLEY LIGHT ASSEMBLY.
Part: IDG — FAILED (NR 2) · airframe 18,878 hrs · 14,034 cycles
ASH 6332 FSD. ABORTED THE TAKEOFF ROLL DUE TO AN IDG 2 CAUTION MESSAGE THAT CLEARED AND WAS REPLACED BY A GEN 2 CAUTION MESSAGE. MAINTENANCE PLACED THIS ON DEFERRAL. MX REPLACED THE NR 2 GENERATOR ON 7/11/05.
Part: BULB — BURNED OUT (EMERGENCY LIGHTS) · airframe 17,645 hrs · 13,148 cycles
A LEFT AFT EMERGENCY FLOOD LIGHT INOP. MAINTENANCE REPLACED THE LAMP. OPS CHECKED GOOD.
Part: BULB — BURNED OUT (EMERGENCY LIGHTS) · airframe 17,358 hrs · 12,932 cycles
CREW REPORTED 1 CEILING ESCAPE LIGHT INOP. THE LIGHT WAS MEL'ED. MAINTENANCE RELAMPED, OPS CHECKED GOOD.
2004
Part: PLUG — DISLODGED (EDP) · airframe 17,285 hrs · 12,886 cycles
ASH 6381 PHX TO EUG - SHUTDOWN NR 1 ENGINE AND DIVERTED TO SMF DUE TO A OIL PRESSURE FLUCTUATION. MX IS IN THE PROCESS OF TROUBLE SHOOTING. OPEN PENDING RESOLUTION. RECOMPLIED WITH MEL FOR EDP. UPON INSPECTION FOUND EDP SPLINE PLUG HAD FALLEN OUT. INSTALLED NEW O-RING AND SPLINE PLUG SERVICED AND PERFORMED OIL CONSUMPTION TEST. NO DEFECTS NOTED ENG DID NOT CONSUME ANY OIL.
Part: BULB — BURNED OUT (EMERGENCY LIGHTS) · airframe 17,238 hrs · 12,850 cycles
ASH 6152 PHX-SBA. CREW REPORTED AN OVERHEAD EMERGENCY LIGHT FAILED TO ILLUMINATE WHEN TESTED. MAINTENANCE REPLACED THE BULB, OPS CHECKED GOOD.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 18,990 hrs · 14,108 cycles
ASH 6713 PHX. FLOOR ELECTROLUMINESCENT PROXIMITY EMERGENCY ESCAPE PATH LIGHT WITHOUT ORANGE OVERLAY WAS FOUND TO BE INOP. MX PLACED THAT SECTION OF LIGHTS ON MEL. ACFT CONTINUED OPERATIONS.
Part: CHECK VALVE — INOPERATIVE (FAN) · airframe 15,259 hrs · 11,422 cycles
DURING TAXI, THE FLIGHT ATTENDANT SAW AND SMELLED SMOKE COMING FROM THE AFT INSIDE CABIN OUT OF THE FLOOR VENTS. THE CREW DECLARED A GROUND EMERGENCY. MX WAS CALLED AND FOUND THE RIGHT PACK HAD OVERTEMPED. MX PLACED IT ON MEL. MX PERFORMED ENGINE RUNS. MX REPLACED FAN BY-PASS CHECK VALVE NO FURTHER DISCREPANCIES FOUND.
Part: ENGINE — MALFUNCTIONED (NR 2) · airframe 15,252 hrs · 11,415 cycles
CREW REPORTED NR 2 ENGINE ITT 84 DEG HIGHER THAN THE NR 1 ENGINE. MX PERFORMED AN ENG COMP WASH AND PWR ASSURANCE CHECKS. MX BORESCOPED NR 2 ENGINE AND REJECTED IT. MX REPLACED NR 2 ENGINE. OP CHECKS GOOD.
Part: FILTER — ODOR (AIR CONDITIONERS) · airframe 15,088 hrs · 11,301 cycles
A/C RETURNED TO FIELD. CREW REPORTED A LAV SMOKE DETECTION AND ELECTRICAL SMOKE ODOR IN CABIN. MX INSPECTED THE A/C LAV AREA BUT COULD NOT FIND EVIDENCE OF A PROBLEM. MX PERFORMED ENGINE RUNS AND THE ODOR WAS COMING THROUGH THE AIR CONDITIONING SYSTEM. MX REPLACED THE DUCT FILTERS. OP CHECKS GOOD.
Part: BULB — INOPERATIVE (EMERGENCY LIGHT) · airframe 15,000 hrs · 11,230 cycles
THE LEFT WING EMERGENCY EXIT LIGHT WAS INOP. PLACED ON MEL 33-51-2. RELAMPED LIGHT.
Part: WINDSHIELD — CRACKED (COCKPIT) · airframe 14,875 hrs · 11,138 cycles
CAPTAIN DECLARED AN EMERGENCY FOR CAPTAINS FRONT WINDSHIELD CRACKED. MX IS REPLACING THE WINDSHIELD.
Part: WARNING LIGHT — ILLUMINATED (TE FLAPS) · airframe 14,627 hrs · 10,950 cycles
DURING CLIMB OUT, A FLAP FAIL CAUTION MSG OCCURED. AIRCRAFT RETURNED TO FIELD WHERE MECHANIC COMPLIED WITH PART "A" OF FLAP FAIL PROCEDURES AND AN OVER WEIGHT LANDING INSPECTION. NO DEFECTS WERE NOTED. A/C WAS RETURNED TO SERVICE. NO PARTS USED
2002
Part: PRIORITY VALVE — MALFUNCTIONED (NLG)
ASH - FLT 6011 - COS-PHX - RETURNED TO FIELD FOR NOSE GEAR UP DISAGREE. MAINTENANCE BEING SENT FROM PHX. MAINTENANCE REPLACED THE NLG PRIORITY VALVE. OPS CHECK GOOD. (M)
Part: LIGHT — INOPERATIVE (CABIN) · airframe 11,302 hrs · 8,539 cycles
AIR SHUTTLE 6131 FROM MRY TO PHX HAD THE EXTERIOR RT MIDDLE EMERGENCY EXIT LIGHT INOPERATIVE. THE LIGHT WAS PLACED ON MEL AND THE A/C DEPARTED WITHOUT FURTHER INCIDENT.
Part: LIGHT — INOPERATIVE (CABIN) · airframe 11,302 hrs · 8,539 cycles
AIR SHUTTLE 6132 FROM MRY TO PHX HAD THE 3RD INTERIOR CEILING EMERGENCY EXIT LIGHT INOPERATIVE. THE LIGHT WAS PLACED ON MEL AND THE A/C DEPARTED WITHOUT FURTHER INCIDENT.
Part: BULB — BURNED OUT (EXTERIOR)
DURING OVERNIGHT MAINTENANCE, IT WAS DISCOVERED THAT THE EXTERIOR NR 4 EMERGENCY EXIT LIGHT WAS INOPERATIVE. MECHANIC REPLACED THE BULB, OPS CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.
2001
Part: LIGHT — INOPERATIVE (CABIN)
FLT 6150 - ON PREFLIGHT, THE CAPTAIN REPORTED THE 3RD LIGHT FROM THE FRONT ROW CEILING FLOOD LIGHT WAS INOPERATIVE. THE ITEM WAS DEFERRED. LATER MAINTENANCE REPLACED THE EMERGENCY LIGHT. (M)
Part: LAMP — BURNED OUT (RT FUSELAGE)
FLT 6154 - PHX-SBA - PILOT REPORTED THE RIGHT FUSELAGE EXTERNAL NR 2 EMERGENCY EXIT LIGHT INOPERATIVE. REMOVED AND REPLACED THE LAMP. OPS CHECKS GOOD. (M)
2000
Part: FLASHLIGHT — INOPERATIVE (CABIN)
FLT 5817 - LGA-IDA - PILOT REPORTED THE AFT CABIN EMERGENCY FLASHLIGHT INOPERTIVE. MAINTENANCE MEL'D FLASHLIGHT. AIRCRAFT WAS RETURNED TO SERVICE. (M)
Part: BULB — BURNED OUT (EMERG EXIT) · airframe 6,073 hrs · 4,634 cycles
DURING PRE-FLIGHT, THE CREW NOTICED AN EMERGENCY EXIT LIGHT INOPERABLE. MAINTENANCE DEFERRED THE ITEM AND THE AIRCRAFT WAS RETURNED TO SERVICE. MAINTENANCE LATER REMOVED AND REPLACED THE EMERGENCY EXIT LIGHT. (X)
1999
Part: BULB — FAILED (CABIN)
FLT 5763 - STL-PHL - THE PREFLIGHT INSPECTION, THE CAPTAIN REPORTED THE THIRD AFT CEILING EMERGENCY LIGHT WAS NOT ILLUMINATED. MAINTENANCE ACTION WAS DEFERRED PER MEL 33-51-1. THE AIRCRAFT WAS RETURNED TO SERVICE. IN SUBSEQUENT MAINTENANCE, THE BULB WAS REPLACED. OPS CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)
Part: LIGHT — INOPERATIVE (CABIN)
FLT 5759 - PHL-BHM - CREW REPORTED THE FORWARD FLOOR LEVEL EMERGENCY FLOOD LIGHT COVER WAS MISSING. MAINTENANCE ACTION WAS DEFERRED PER MEL 33-51-1. THE AIRCRAFT WAS RETURNED TO SERVICE. IN SUBSEQUENT MAINTENANCE REMOVED AND REPLACED BULB. OPS CHECK GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)
Part: WINDSHIELD — CRACKED (LT COCKPIT)
RDU/BOS - FLT 5816 - APPROXIMATELY 15 MINUTES OUT OF BOS, THE NR 1 FORWARD WINDSHIELD CRACKED. AIRCRAFT LANDED WITHOUT INCIDENT AND DID NOT DECLARE AN EMERGENCY. MAINTENANCE INSPECTED THE WINDSHIELD AND NOTED 15 INCHES OF VERTICAL CRACKING IN THE MIDDLE PLY AND 3 TO 4 INCHES OF CRACKING IN THE INNER PLY. MAINTENANCE REPLACED THE WINDSHIELD. AIRCRAFT WAS RETURNED TO SERVICE. (X)
Part: BRAKE — LEAKING (NR 3)
FOUND HYDRAULIC FLUID LEAKING FROM NR 3 BRAKE. TEAR-DOWN DATA HAS IDENTIFIED A PROBLEM WITH THE PISTON LEAKING AROUND THE PIN, AND THE T-SEALS HAVING TO BE REPLACED. AIRCRAFT BRAKING SYSTEMS HAS IDENTIFIED A PROBLEM WITH THE BRAKE PIN NOT BEING FINISHED PROPERLY, WHICH IS SCORING THE SEAL. REF: OPERATOR CONTROL NR MASA99040, AND, NR 99ZZZX1487 THROUGH 99ZZZX1522.
1998
Part: BRAKE — LEAKING (NR 2)
FOUND HYDRAULIC FLUID LEAKING FROM NR 2 BRAKE. TEAR-DOWN DATA HAS IDENTIFIED A PROBLEM WITH THE PISTON LEAKING AROUND THE PIN, AND THE T-SEALS HAVING TO BE REPLACED. AIRCRAFT BRAKING SYSTEMS HAS IDENTIFIED A PROBLEM WITH THE BRAKE PIN NOT BEING FINISHED PROPERLY, WHICH IS SCORING THE SEAL. REF: OPERATOR CONTROL NR MASA99040, AND, NR 99ZZZX1487 THROUGH 99ZZZX1522.