N816CW

ATA 2133

Part: OUTFLOW VALVE — OPEN (LEFT) · airframe 9,580 hrs · 6,811 cycles

CREW REPORTED, WHILE ON A TEST FLIGHT FOR A REQUIRED AOA SYSTEM TEST, CLIMBING THROUGH FL290 A LOUD BANG WAS HEARD COMING FROM THE LEFT FORWARD FUSELAGE AREA. THE CABIN VSI RATE NEEDLE WAS PEGGED AT +2500 FPM. OXYGEN MASKS WERE DONNED AND AN EMERGENCY WAS DECLARED. DURING EMERGENCY DESCENT AIRCRAFT WAS CLEARED TO 10,000 FT. AIRCRAFT LANDED AT KDAL WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT OUTFLOW / SAFETY VALVE, FLOW CONTROL VALVE, AND THE NR 1 MIXING VALVE. TEST FLIGHT WAS SATISFACTORY. AIRCRAFT WAS RETURNED TO SERVICE.

ATA 7250

Part: BLADE — BROKEN (NR 2 ENGINE) · airframe 10,542 hrs · 7,066 cycles

AT FLIGHT LEVEL 390 FT THE CREW HEARD A LOUD THUMP AND VIBRATION ON THE NR 2 ENGINE. ENGINE WAS SHUT DOWN AND AIRCRAFT LANDED AT DAL WITH NO FURTHER PROBLEMS. AFTER FURTHER INSPECTION IT WAS FOUND THAT THERE WERE SOME TURBINE BLADES MISSING. ENGINE WAS REMOVED AND A LOANER ENGINE WAS INSTALLED. GARRETT IS CURRENTLY IN THE TEAR DOWN MODE OF THE ENGINE AND DO NOT KNOW THE EXACT FAILED PART.

ATA 7250

Part: BLADE — BROKEN (TUBINE SECTION) · airframe 9,415 hrs · 6,289 cycles

AIRCRAFT DEPARTED SLC, ON CLIMBOUT THE PILOTS EXPERIENCED A VIBRATION. REDUCED POWER AND VIBRATION WENT AWAY. THE PILOTS DECIDED TO RETURN TO SLC AND LANDED WITH NO FURTHER PROBLEMS. INVESTIGATING THE TAIL PIPE OF THE ENGINE, FOUND A PIECE OF THE THIRD STAGE TURBINE WHEEL BLADE BROKEN OFF AND STUCK IN THE TAIL PIPE OF THE ENGINE.

ATA 3160

Part: DISPLAY — MALFUNCTIONED (COCKPIT) · airframe 8,172 hrs · 5,455 cycles

AIRCRAFT WAS EN ROUTE TO BED, EXPERIENCED SMOKE IN THE COCKPIT. DECLARED AN EMERGENCY AND LANDED AT CHS. FOUND THE MFD AS THE PROBLEM.