40 mi northeast of msp an arrival DC9 flight crew encounters parachute activity, receiving a TCASII RA from the drop aircraft in the vicinity of twinz intersection, mn.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	616512
Time
Date	200405
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : fcm.vor
State Reference	MN
Altitude	msl single value : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : m98.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 30
Operating Under FAR Part	Part 121
Flight Phase	cruise : level descent : intermediate altitude
Route In Use	arrival star : eau claire
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : 105
Flight Phase	cruise : level descent : vacating altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 5000
ASRS Report	616512
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne critical inflight encounter : skydivers non adherence : far non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Miss Distance	horizontal : 7000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

While over twinz intersection at 11000 ft MSL, the flight received a TCASII advisory referencing a target located at about our 11 O'clock position, +300 ft. The TA was followed by a TCASII RA instructing the aircraft to be descended. The PF immediately disengaged the autoplt and began a descent. The target aircraft was visually spotted by both flight crew members, and 2 objects, assuming to be parachutists, were seen falling out of the aircraft. The target aircraft also began a descent and a left turn. The PNF informed ATC that we had received a TCASII RA, and that we were descending to avoid further conflict as instructed by the TCASII. ATC then cleared the flight to descend to 7000 ft MSL. Once the TCASII announced clear of conflict, the descent rate was reduced, and the flight continued on to msp without further incident.

Original NASA ASRS Text

Title: 40 MI NE OF MSP AN ARR DC9 FLT CREW ENCOUNTERS PARACHUTE ACTIVITY, RECEIVING A TCASII RA FROM THE DROP ACFT IN THE VICINITY OF TWINZ INTXN, MN.

Narrative: WHILE OVER TWINZ INTXN AT 11000 FT MSL, THE FLT RECEIVED A TCASII ADVISORY REFING A TARGET LOCATED AT ABOUT OUR 11 O'CLOCK POS, +300 FT. THE TA WAS FOLLOWED BY A TCASII RA INSTRUCTING THE ACFT TO BE DSNDED. THE PF IMMEDIATELY DISENGAGED THE AUTOPLT AND BEGAN A DSCNT. THE TARGET ACFT WAS VISUALLY SPOTTED BY BOTH FLT CREW MEMBERS, AND 2 OBJECTS, ASSUMING TO BE PARACHUTISTS, WERE SEEN FALLING OUT OF THE ACFT. THE TARGET ACFT ALSO BEGAN A DSCNT AND A L TURN. THE PNF INFORMED ATC THAT WE HAD RECEIVED A TCASII RA, AND THAT WE WERE DSNDING TO AVOID FURTHER CONFLICT AS INSTRUCTED BY THE TCASII. ATC THEN CLRED THE FLT TO DSND TO 7000 FT MSL. ONCE THE TCASII ANNOUNCED CLR OF CONFLICT, THE DSCNT RATE WAS REDUCED, AND THE FLT CONTINUED ON TO MSP WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.