N250AE

Part: SMOKE DETECTOR — FAILED (CARGO BAY)

BFL - FLT 3000 - AFTER TAKEOFF, CARGO SMOKE LIGHT ILLUMINATED AT 8,000 FEET. CREW DISCHARGED CARGO FIRE BOTTLE, THE LIGHT WENT OUT AFTER 2 MINUTES AND CREW RETURNED TO BFL. NO EVIDENCE FOUND OF FIRE OR SMOKE AFTER RETURN TO GATE. REMOVED AND REPLACED FORWARD AND AFT SMOKE DETECTORS (S/N A4289 AND A4237) IAW AMM 26-23-00. OPS CHECK GOOD. NR 2 FIRE BOTTLE WAS REMOVED AND REPLACED. (M)

Part: POWER SUPPLY — DISCHARGED (CABIN)

LAX - FLT 3085 - CREW REPORTED EMERGENCY FLOOR LIGHTS AT ROW 6 AND 7 EXTINGUISH AFTER 40 SECONDS. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY UNIT 22LN IAW SAAB MM. OPS CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: WARNING LIGHT — MALFUNCTIONED (COCKPIT)

LAX - FLT 3057 - CREW ABORTED TAKEOFF DUE TO RIGHT AUTOMATIC POWER RESERVE LIGHT DID NOT ILLUMINATE. CREW ALSO REPORTED LEFT PROPELLER RPM LAGS BEHIND THE RIGHT. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. OPERATIONAL CHECK OF APR SYSTEM WAS COMPLIED WITH IAW WORK CARD 2813, NO LAG OF PROPELLER RPM WAS NOTED. AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: SMOKE DETECTOR — DEFECTIVE (AVIONICS)

SBP - AVIONICS SMOKE LIGHT DOES NOT ILLUMINATE WHEN THE SMOKE TEST SWITCH IS ACTIVATED. REMOVED AND REPLACED AVIONICS SMOKE DETECTOR. OPS CHECK GOOD. (M0

Part: POWERPACK — DISCHARGED (CABIN) · airframe 21,249 hrs · 20,492 cycles

LAX - FLT 3211 - EMERGENCY POWER SUPPLY BATTERIES HAVE LOW VOLTAGE, APPROXIMATELY FIVE VOLTS. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY BATTERIES AT 20LN, 22LN, 23LN, AND 24LN IAW SAAB MM 33-51-10. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. REF: OPER CONTROL NR SIMA289-1, AND, 20001208SH007 THROUGH 20001208SH009. (X)

Part: POWERPACK — DISCHARGED (CABIN) · airframe 21,249 hrs · 20,492 cycles

LAX - FLT 3211 - EMERGENCY POWER SUPPLY BATTERIES HAVE LOW VOLTAGE, APPROXIMATELY FIVE VOLTS. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY BATTERIES AT 20LN, 22LN, 23LN, AND 24LN IAW SAAB MM 33-51-10. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. REF: OPER CONTROL NR 20001208SH007 THROUGH 20001208SH009. (X)

Part: POWERPACK — DISCHARGED (CABIN) · airframe 21,249 hrs · 20,492 cycles

LAX - FLT 3211 - EMERGENCY POWER SUPPLY BATTERIES HAVE LOW VOLTAGE, APPROXIMATELY FIVE VOLTS. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY BATTERIES AT 20LN, 22LN, 23LN, AND 24LN IAW SAAB MM 33-51-10. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. REF: OPER CONTROL NR SIMA289-1, AND, 20001208SH007 THROUGH 20001208SH009. (X)

Part: POWERPACK — DISCHARGED (CABIN) · airframe 21,249 hrs · 20,492 cycles

LAX - FLT 3211 - EMERGENCY POWER SUPPLY BATTERIES HAVE LOW VOLTAGE, APPROXIMATELY FIVE VOLTS. MAINTENANCE REMOVED AND REPLACED POWER SUPPLY BATTERIES AT 20LN, 22LN, 23LN, AND 24LN IAW SAAB MM 33-51-10. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. REF: OPER CONTROL NR SIMA289-1, AND, 20001208SH007 THROUGH 20001208SH009. (X)

Part: BULB — FAILED (CABIN)

DFW - FLT 3252 - FLOOR PROXIMITY LIGHT AT ROW 9 DOES NOT ILLUMINATE. REMOVED AND REPLACED BULB. OPERATIONAL CHECK GOOD. (M)

Part: EADI — FAILED (LT COCKPIT)

JFK - FLT 4929 - AFTER TAKEOFF, CAPTAIN EFIS FAILED, NEXT CREW SMELLED SMOKE IN COCKPIT. RETURNED TO JFK. REMOVED AND REPLACED CAPTAINS EADI SCREEN IAW S7340 MM 34-24-10 GND. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)

Part: DOOR PANEL — DEFECTIVE (OUTER SURFACE)

INSPECTION FOUND THE ANTI-STATIC MATERIAL WAS FALLING OFF. THE PANEL HAD PREVIOUSLY BEEN REPAIRED LESS THAN ONE YEAR. THE REPAIR IS A SAAB APPROVED REPAIR THAT BONDS STATIC ELECTRICITY CONDUCTIVITY MATERIAL (EXPANDED ALUMINUM) TO REPLACE THE ALUMINUM FOIL. THE SAAB PROCEDURE IS INADEQUATE TO ACHIEVE A RELIABLE BOND. SUBMITTER STATED SAAB AND/OR THE FAA SHOULD IMMEDIATELY DISAPPROVE THIS PROCEDURE AND ALL PANELS REPAIRED PER THIS PROCEDURE SHOULD BE REPAIRED USING THE SAAB APPROVED PROCEDURE OF FLAME SPRAY. NOTE: ON 7-23-97, PN 7253501-712, HAD SAME PROBLEM AND DEFECT REPORT WAS SUBMITTED.

Part: DOOR PANEL — DEFECTIVE (DOUBLER)

INSPECTION FOUND DOUBLER HAS 2 HOLES BURNED THROUGH BY ELECTRICAL ARCING. STATIC ELECTRIC BUILD-UP ON OUTER PANEL TRAVELING THROUGH RIVETS TO DOUBLER AND DISCHARGING THROUGH DOUBLER. THIS IS BEING CAUSED BY A POOR DESIGN OF NOT HAVING THE RIVETS INSULATED FROM ANTI-STATIC MATERIAL ON OUTER SURFACE ENHANCED BY THE REPAIR USING EXPANDED METAL AS ANTI-STATIC PROTECTION. THIS REPAIR DOES NOT BOND ADEQUATELY AND GROUND IS NOT RELIABLE AT THE EDGES. SUBMITTER STATED RIVETS SHOULD BE SEALED OVER WITH FIBERGLASS PRIOR TO REPAIRING THE ANTI-STATIC AND EXPANDED METAL SHOULD NOT BE USED IF IT CANNOT BE RELIED ON TO HAVE A GOOD BOND. NOTE: THERE IS AN OIL CHECK DOOR IN PANEL, A FIRE COULD HAPPEN.

Part: PANEL — FAILED (BELLY)

OPERATOR FORWARDED ACFT SAAB 340 BELLY PANEL PN 7253501-712 TO BE REPAIRED. PANELS OUTER FIBERGLASS LAYER USED AS A SEAL PLY OVER ANTI-STATIC MATERIAL IS FAILING. PANEL HAD BEEN PREVIOUSLY REPAIRED USING SAAB APPROVED PROCEDURE. SUBMITTER STATES PROCEDURE IS UNRELIABLE.

Part: BEARING — SPALLED (PROP SHAFT)

DISASSEMBLY OF GEARCASE, P/N 77580010, REVEALED THE FORWARD PROP SHAFT BALL BEARING WAS SPALLED, ONE BALL ONLY (775759-1 FIG 7, ITEM 50).

Part: BRAKE — SMOKING (RT MLG)

FLT NR 4917 - PIT - DURING TAXI INTO GATE, FLIGHT ATTENDANT REPORTED TO THE CAPTAIN THAT THE RT MAIN LANDING GEAR WAS SMOKING. AIRCRAFT STOPPED, EMERGENCY PERSONNEL WAS NOTIFIED, CREW THEN ACTIVATED ENGINE FIRE BOTTLES AND EVACUATED PASSENGERS FROM AIRCRAFT. RIGHT MAIN LANDING BRAKE WAS EXTINGUISHED NO INJURIES WERE REPORTED. (M)

Part: PROP BLADE — SEPARATED (LT ENGINE)

MIA - FLT 5725 - CREW REPORTS LEFT ENGINE VIBRATION IN-FLIGHT, SHUT ENGINE DOWN IN-FLIGHT. FOUND BLADE SHEATH SEPARATED FROM LEFT PROPELLER BLADE. REPLACED PROPELLER BLADE.