Banner tow small aircraft drops banner after pick when pilot becomes aware of engine mount problem. Lands straight ahead on remaining runway. Controls partially obstructed by warped fire wall engine mount.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	151362
Time
Date	199007
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : see
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : see
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 1600 flight time type : 40
ASRS Report	151362
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Concerning a banner tow operation, a low approach was made 80-85 mph, 10 degree flap 16-17' of manifold pressure over the banner line after the pull up (I estimate 2G's) it was evident I had a problem with the cowling. I pulled the power and released the banner and landed with the remaining runway. Controling the aircraft was difficult due to the control yoke rubbing behind the panel. I then taxied off the active west/O any problem. It seems the top 2 motor mounts support channels broke free tearing the firewall with it. The engine dropped down about 25 degrees. It is evident these supporting channels have been cracked for some time leaving the firewall support stiffness to bear much of the load.

Original NASA ASRS Text

Title: BANNER TOW SMA DROPS BANNER AFTER PICK WHEN PLT BECOMES AWARE OF ENGINE MOUNT PROBLEM. LANDS STRAIGHT AHEAD ON REMAINING RWY. CTLS PARTIALLY OBSTRUCTED BY WARPED FIRE WALL ENGINE MOUNT.

Narrative: CONCERNING A BANNER TOW OPERATION, A LOW APCH WAS MADE 80-85 MPH, 10 DEG FLAP 16-17' OF MANIFOLD PRESSURE OVER THE BANNER LINE AFTER THE PULL UP (I ESTIMATE 2G'S) IT WAS EVIDENT I HAD A PROB WITH THE COWLING. I PULLED THE PWR AND RELEASED THE BANNER AND LANDED WITH THE REMAINING RWY. CTLING THE ACFT WAS DIFFICULT DUE TO THE CTL YOKE RUBBING BEHIND THE PANEL. I THEN TAXIED OFF THE ACTIVE W/O ANY PROB. IT SEEMS THE TOP 2 MOTOR MOUNTS SUPPORT CHANNELS BROKE FREE TEARING THE FIREWALL WITH IT. THE ENG DROPPED DOWN ABOUT 25 DEGS. IT IS EVIDENT THESE SUPPORTING CHANNELS HAVE BEEN CRACKED FOR SOME TIME LEAVING THE FIREWALL SUPPORT STIFFNESS TO BEAR MUCH OF THE LOAD.

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.