Altitude deviation account TCASII RA to descend.

Attributes
ACN	262195
Time
Date	199401
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lyh
State Reference	VA
Altitude	msl bound lower : 27300 msl bound upper : 28000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute airway : zdc
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Stratotanker 135
Operating Under FAR Part	other : other
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 15000
ASRS Report	262195
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 900
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Received TCASII alert 'descend' at FL280, 50 NM north of lyh VOR. TCASII screen showed intruder 900 ft above at 11 O'clock. Descended aircraft 700 ft while KC135 passed overhead. Notified ATC and returned to FL280.

Original NASA ASRS Text

Title: ALTDEV ACCOUNT TCASII RA TO DSND.

Narrative: RECEIVED TCASII ALERT 'DSND' AT FL280, 50 NM N OF LYH VOR. TCASII SCREEN SHOWED INTRUDER 900 FT ABOVE AT 11 O'CLOCK. DSNDED ACFT 700 FT WHILE KC135 PASSED OVERHEAD. NOTIFIED ATC AND RETURNED TO FL280.

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.