Aircraft equipment problem TCASII false TCASII RA on final approach.

Attributes
ACN	261909
Time
Date	199401
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cle
State Reference	OH
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : cle
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 : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller military : 5 controller radar : 11
ASRS Report	261909
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

While being vectored for an ILS 23L approach at cle, 3 consecutive aircraft reported a TCASII RA. There were no observed targets within 5 mi of the aircraft receiving the RA. Workload increased to a point that an error in communication (read-back error) was experienced with a different aircraft (no loss of separation occurred).

Original NASA ASRS Text

Title: ACFT EQUIP PROB TCASII FALSE TCASII RA ON FINAL APCH.

Narrative: WHILE BEING VECTORED FOR AN ILS 23L APCH AT CLE, 3 CONSECUTIVE ACFT REPORTED A TCASII RA. THERE WERE NO OBSERVED TARGETS WITHIN 5 MI OF THE ACFT RECEIVING THE RA. WORKLOAD INCREASED TO A POINT THAT AN ERROR IN COM (READ-BACK ERROR) WAS EXPERIENCED WITH A DIFFERENT ACFT (NO LOSS OF SEPARATION OCCURRED).

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.