<< >> NASA ASRS Report 354337, November 1996

Flight crew of a B727 takes evasive action in response to a TCASII RA during final approach inside the OM. Reporter requests that there should be a requirement that even cargo aircraft require a TCASII, and if so equipped when sold, that the new owner would not be able to remove the TCASII equipment. He believes that TCASII has saved his day on many occasions.

Attributes
ACN	354337
Time
Date	199611
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : 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	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	enroute : direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 9500 flight time type : 3500
ASRS Report	354337
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

This is a situation where the TCASII did exactly what it is designed to do. Prevent an accident from happening. Recently we purchased 15 boeing 727's from air carrier X which came equipped with the TCASII system. We were pleased to see TCASII on board all of the aircraft. We do fly into just about all of the major airports and it's a great feeling being able to see all the traffic around you especially flying into ord at 8 O'clock in the morning, things get pretty busy there. Our owner learned that the TCASII system was not needed in cargo aircraft. They were removed and sold in all but a few planes. I think that the TCASII system especially the ones tied into the radar system are essential to air safety. I feel that all aircraft flying commercially should be required to have TCASII installed, and if it is installed when sold to a cargo carrier it should be law that it cannot be removed, and must operate as designed.

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Original NASA ASRS Text

Title: FLC OF A B727 TAKES EVASIVE ACTION IN RESPONSE TO A TCASII RA DURING FINAL APCH INSIDE THE OM. RPTR REQUESTS THAT THERE SHOULD BE A REQUIREMENT THAT EVEN CARGO ACFT REQUIRE A TCASII, AND IF SO EQUIPPED WHEN SOLD, THAT THE NEW OWNER WOULD NOT BE ABLE TO REMOVE THE TCASII EQUIP. HE BELIEVES THAT TCASII HAS SAVED HIS DAY ON MANY OCCASIONS.

Narrative: THIS IS A SIT WHERE THE TCASII DID EXACTLY WHAT IT IS DESIGNED TO DO. PREVENT AN ACCIDENT FROM HAPPENING. RECENTLY WE PURCHASED 15 BOEING 727'S FROM ACR X WHICH CAME EQUIPPED WITH THE TCASII SYS. WE WERE PLEASED TO SEE TCASII ON BOARD ALL OF THE ACFT. WE DO FLY INTO JUST ABOUT ALL OF THE MAJOR ARPTS AND IT'S A GREAT FEELING BEING ABLE TO SEE ALL THE TFC AROUND YOU ESPECIALLY FLYING INTO ORD AT 8 O'CLOCK IN THE MORNING, THINGS GET PRETTY BUSY THERE. OUR OWNER LEARNED THAT THE TCASII SYS WAS NOT NEEDED IN CARGO ACFT. THEY WERE REMOVED AND SOLD IN ALL BUT A FEW PLANES. I THINK THAT THE TCASII SYS ESPECIALLY THE ONES TIED INTO THE RADAR SYS ARE ESSENTIAL TO AIR SAFETY. I FEEL THAT ALL ACFT FLYING COMMERCIALLY SHOULD BE REQUIRED TO HAVE TCASII INSTALLED, AND IF IT IS INSTALLED WHEN SOLD TO A CARGO CARRIER IT SHOULD BE LAW THAT IT CANNOT BE REMOVED, AND MUST OPERATE AS DESIGNED.

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.