BE350 first officer reported executing a low altitude go-around at mmu when a light aircraft began t...

Attributes
ACN	1304454
Time
Date	201510
Local Time Of Day	0601-1200
Place
Locale Reference	MMU.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Super King Air 350
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 110 Flight Crew Total 2750 Flight Crew Type 205
Events
Anomaly	Conflict Ground Conflict Critical Conflict NMAC
Miss Distance	Horizontal 400 Vertical 200

Narrative:

We were cleared for a visual approach to 31. Entered left downwind to 31; on left base we were cleared to land. At 500 feet on final; I as the pilot monitoring; noticed a cessna skyhawk taxi onto the intersecting runway 5. My first thought was maybe they were given a line up and wait runway 5 but I never recalled hearing that instruction given from ATC. I advised the pilot flying of the skyhawk on runway 5. The skyhawk entered runway 5 and proceeded to add takeoff power and started rolling down the runway. At that point I queried ATC about the skyhawk on the intersecting runway and that we were short final 31; less than 200 feet. We started to execute a go-around when the tower also instructed us to go around. We passed above the skyhawk. The skyhawk did indeed takeoff from runway 5. Luckily we caught glimpse of the skyhawk entering the runway initially because from our viewpoint of final on 31 most of runway 5 was blocked by tall trees. The skyhawk disappeared during its takeoff roll and that's when I called for the go around. We didn't see the airplane again until we were executing a go around and the airplane was airborne and directly below us. This absolutely would have been a very close call had we landed on 31. A classic clear; VFR day.

Original NASA ASRS Text

Title: BE350 FO reported executing a low altitude go-around at MMU when a light aircraft began takeoff roll on an intersecting runway.

Narrative: We were cleared for a visual approach to 31. Entered left downwind to 31; on left base we were cleared to land. At 500 feet on final; I as the pilot monitoring; noticed a Cessna Skyhawk taxi onto the intersecting Runway 5. My first thought was maybe they were given a line up and wait Runway 5 but I never recalled hearing that instruction given from ATC. I advised the pilot flying of the Skyhawk on Runway 5. The Skyhawk entered Runway 5 and proceeded to add takeoff power and started rolling down the runway. At that point I queried ATC about the Skyhawk on the intersecting Runway and that we were short final 31; less than 200 feet. We started to execute a go-around when the tower also instructed us to go around. We passed above the Skyhawk. The Skyhawk did indeed takeoff from Runway 5. Luckily we caught glimpse of the Skyhawk entering the runway initially because from our viewpoint of final on 31 most of Runway 5 was blocked by tall trees. The Skyhawk disappeared during its takeoff roll and that's when I called for the go around. We didn't see the airplane again until we were executing a go around and the airplane was airborne and directly below us. This absolutely would have been a very close call had we landed on 31. A classic clear; VFR day.

Data retrieved from NASA's ASRS site 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.

BE350 first officer reported executing a low altitude go-around at mmu when a light aircraft began takeoff roll on an intersecting runway.