Large transport landing on runway 12. Widebody transport departing on runway 9. Large transport caug...

Attributes
ACN	118516
Time
Date	198908
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 3000 flight time type : 1200
ASRS Report	118516
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Airport
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

We were cleared to land on runway 12 at miami int'l. While we were on the ILS approach at approximately 3 mi (and cleared to land) we heard tower clear a heavy jet (I think it was a widebody transport) for takeoff on runway 9L. The heavy took a moderate amount of time to start his takeoff roll so that he was applying full takeoff power just as we were crossing behind him in our landing. We got rocked real good by his jetwash when we were less than 100' AGL. Definitely an unsafe situation. Tower had warned us about the possibility of his jet wash causing turbulence. When we landed and told tower that we had gotten a good jolt they said that they hadn't expected the heavy to take so long to start its takeoff. They said that it was a situation that shouldn't happen but does every now and then. I think this should never be allowed to occur. It was a potentially hazardous situation. Let's change the procedure so this doesn't happen again!

Original NASA ASRS Text

Title: LGT LNDG ON RWY 12. WDB DEPARTING ON RWY 9. LGT CAUGHT IN JET WASH.

Narrative: WE WERE CLRED TO LAND ON RWY 12 AT MIAMI INT'L. WHILE WE WERE ON THE ILS APCH AT APPROX 3 MI (AND CLRED TO LAND) WE HEARD TWR CLEAR A HEAVY JET (I THINK IT WAS A WDB) FOR TKOF ON RWY 9L. THE HEAVY TOOK A MODERATE AMOUNT OF TIME TO START HIS TKOF ROLL SO THAT HE WAS APPLYING FULL TKOF POWER JUST AS WE WERE XING BEHIND HIM IN OUR LNDG. WE GOT ROCKED REAL GOOD BY HIS JETWASH WHEN WE WERE LESS THAN 100' AGL. DEFINITELY AN UNSAFE SITUATION. TWR HAD WARNED US ABOUT THE POSSIBILITY OF HIS JET WASH CAUSING TURBULENCE. WHEN WE LANDED AND TOLD TWR THAT WE HAD GOTTEN A GOOD JOLT THEY SAID THAT THEY HADN'T EXPECTED THE HEAVY TO TAKE SO LONG TO START ITS TKOF. THEY SAID THAT IT WAS A SITUATION THAT SHOULDN'T HAPPEN BUT DOES EVERY NOW AND THEN. I THINK THIS SHOULD NEVER BE ALLOWED TO OCCUR. IT WAS A POTENTIALLY HAZARDOUS SITUATION. LET'S CHANGE THE PROC SO THIS DOESN'T HAPPEN AGAIN!

Data retrieved from NASA's ASRS site as of August 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.

Large transport landing on runway 12. Widebody transport departing on runway 9. Large transport caught in jet wash.