<< >> NASA ASRS Report 549090, June 2002

B757 flight crew stopped descent and leveled off, during high altitude descent in clouds, in response to a TCASII TA resulting in less than standard separation and injury to a cabin attendant.

Attributes
ACN	549090
Time
Date	200206
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : jdunn
State Reference	IL
Altitude	msl single value : 27700
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : mosey
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : cfi pilot : flight engineer pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 170 flight time total : 17000 flight time type : 2000
ASRS Report	549090
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	cabin event other conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took precautionary avoidance action
Consequence	faa : reviewed incident with flight crew other
Miss Distance	vertical : 700
Supplementary
Problem Areas	Cabin Crew Human Performance ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

While descending to FL270 on the mosey arrival into cvg, the TCASII squawked 'traffic, traffic, traffic.' at FL277, we were north the clouds and a look at the TCASII display showed a yellow target directly ahead, 700 ft below us, at our descent clearance altitude. I announced 'raise the nose, level off, stop descent' so we could avoid and identify the target. The first officer disconnected the autoplt and quickly leveled the aircraft. After a thorough examination of the TCASII display and a check with ATC (there was also an aircraft directly below us at FL260) we resumed our descent. Because our response was very rapid, one of the flight attendants in the aft galley was injured breaking her ankle.

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Original NASA ASRS Text

Title: B757 FLC STOPPED DSCNT AND LEVELED OFF, DURING HIGH ALT DSCNT IN CLOUDS, IN RESPONSE TO A TCASII TA RESULTING IN LTSS AND INJURY TO A CABIN ATTENDANT.

Narrative: WHILE DSNDING TO FL270 ON THE MOSEY ARR INTO CVG, THE TCASII SQUAWKED 'TFC, TFC, TFC.' AT FL277, WE WERE N THE CLOUDS AND A LOOK AT THE TCASII DISPLAY SHOWED A YELLOW TARGET DIRECTLY AHEAD, 700 FT BELOW US, AT OUR DSCNT CLRNC ALT. I ANNOUNCED 'RAISE THE NOSE, LEVEL OFF, STOP DSCNT' SO WE COULD AVOID AND IDENT THE TARGET. THE FO DISCONNECTED THE AUTOPLT AND QUICKLY LEVELED THE ACFT. AFTER A THOROUGH EXAM OF THE TCASII DISPLAY AND A CHK WITH ATC (THERE WAS ALSO AN ACFT DIRECTLY BELOW US AT FL260) WE RESUMED OUR DSCNT. BECAUSE OUR RESPONSE WAS VERY RAPID, ONE OF THE FLT ATTENDANTS IN THE AFT GALLEY WAS INJURED BREAKING HER ANKLE.

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.