A be-76 student had difficulty holding back pressure to climb after takeoff; so the instructor took ...

Narrative:

I was the flight instructor and the pilot in command of a be-76; however I was the pilot not flying. My commercial multi-engine student was the pilot flying. After completing the run up and pre-takeoff checklist; my student requested right closed traffic from runway 27R. Immediately after takeoff my student reported to me that he is having difficulty holding the back pressure for the climb. I immediately declared 'my controls' and took control of the aircraft. From this point forward; I was the pilot flying and my student was pilot not flying. I quickly realized that the issue was related to the elevator trim control and noticed that the elevator trim wheel is rotating loosely. At this point I was still in the upwind runway 27R. Immediately after; I contacted the tower and requested a landing clearance as I could not keep the aircraft climbing. Tower issued me a landing clearance on any runway. I declared to tower that I would like to land on runway 17 as it seemed the safest choice. I landed the aircraft safely; smoothly; and normally on runway 17 and no damage of any kind (to the best of my knowledge) occurred as the result of this landing. The aircraft mechanic verified this fact. Also; no bodily injury of any kind occurred to my student or me at any point during this flight.

Original NASA ASRS Text

Title: A BE-76 student had difficulty holding back pressure to climb after takeoff; so the instructor took control; declared an emergency and land safely where a disconnected elevator trim was found.

Narrative: I was the flight instructor and the pilot in command of a BE-76; however I was the pilot not flying. My commercial multi-engine student was the pilot flying. After completing the run up and Pre-Takeoff Checklist; my student requested right closed traffic from Runway 27R. Immediately after takeoff my student reported to me that he is having difficulty holding the back pressure for the climb. I immediately declared 'My Controls' and took control of the aircraft. From this point forward; I was the pilot flying and my student was pilot not flying. I quickly realized that the issue was related to the elevator trim control and noticed that the elevator trim wheel is rotating loosely. At this point I was still in the upwind Runway 27R. Immediately after; I contacted the Tower and requested a landing clearance as I could not keep the aircraft climbing. Tower issued me a landing clearance on any runway. I declared to Tower that I would like to land on Runway 17 as it seemed the safest choice. I landed the aircraft safely; smoothly; and normally on Runway 17 and no damage of any kind (to the best of my knowledge) occurred as the result of this landing. The aircraft Mechanic verified this fact. Also; no bodily injury of any kind occurred to my student or me at any point during this flight.

Data retrieved from NASA's ASRS site as of July 2013 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	1114435
Time
Date	201308
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Duchess 76
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Component
Aircraft Component	Elevator Trim System
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 1700
Events
Anomaly	Aircraft Equipment Problem Critical

A be-76 student had difficulty holding back pressure to climb after takeoff; so the instructor took control; declared an emergency and land safely where a disconnected elevator trim was found.