P31 controller witnessed a developing conflict involving traffic in an adjacent sectors and called t...

Narrative:

This was a situation that occurred on the border of P31/mob airspace; at the tradr fix/gate. After I handed off and shipped aircraft Y to mob approach; on course; level at 100MSL westbound to tradr. Shortly thereafter; I accepted a hand off on aircraft X; about 12nm west of tradr; level at 110MSL eastbound to tradr. I observed aircraft X descending into the opposite direction aircraft Y; still level at 100 MSL westbound. I call ZHU brookley sector; who owns the airspace at 110MSL; over mob approach. They stated mob was talking to aircraft X. I then called mob west sector to announce the immediate traffic situation. They stated they were taking actions to avoid the traffic. At no time were either aircraft were on my frequency for this traffic event. I had transferred communications of the aircraft Y before I took the hand off to aircraft X; which would have been 5-8 minutes before this event. I simply saw an unsafe event and took actions to bring this unsafe action to the attention of the controller involved. Trying to break the chain; so to speak. I do not know what would help this event. It is normal to receive IFR arrivals 1000 ft above outbound IFR traffic. In this case I do not know what coordination occurred between ZHU/mob as to why mob would be talking to aircraft X at 110MSL; above their airspace; to an aircraft inbound to pns; and to why they descended aircraft X with traffic opposite direction 1000 feet below them.

Original NASA ASRS Text

Title: P31 Controller witnessed a developing conflict involving traffic in an adjacent sectors and called the affected sectors alerting them to the developing situation.

Narrative: This was a situation that occurred on the border of P31/MOB airspace; at the TRADR fix/gate. After I handed off and shipped Aircraft Y to MOB Approach; on course; level at 100MSL Westbound to TRADR. Shortly thereafter; I accepted a hand off on Aircraft X; about 12nm West of TRADR; level at 110MSL Eastbound to TRADR. I observed Aircraft X descending into the opposite direction Aircraft Y; still level at 100 MSL Westbound. I call ZHU Brookley Sector; who owns the airspace at 110MSL; over MOB Approach. They stated MOB was talking to Aircraft X. I then called MOB West Sector to announce the immediate traffic situation. They stated they were taking actions to avoid the traffic. At no time were either aircraft were on my frequency for this traffic event. I had transferred communications of the Aircraft Y before I took the hand off to Aircraft X; which would have been 5-8 minutes before this event. I simply saw an unsafe event and took actions to bring this unsafe action to the attention of the controller involved. Trying to BREAK the CHAIN; so to speak. I do not know what would help this event. It is normal to receive IFR arrivals 1000 ft above outbound IFR traffic. In this case I do not know what coordination occurred between ZHU/MOB as to why MOB would be talking to Aircraft X at 110MSL; above their airspace; to an aircraft inbound to PNS; and to why they descended Aircraft X with traffic opposite direction 1000 feet below them.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	966125
Time
Date	201108
Local Time Of Day	1201-1800
Place
Locale Reference	P31.TRACON
State Reference	FL
Aircraft 1
Make Model Name	Citation III VI VII (C650)
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Aircraft 2
Make Model Name	T6A Texan II / Harvard II (Raytheon)
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

P31 controller witnessed a developing conflict involving traffic in an adjacent sectors and called the affected sectors alerting them to the developing situation.