Airport (less than 10 km from airport)

The pilot's failure to maintain airspeed while maneuvering on initial take off climb resulting in an inadvertent stall, loss of control, and subsequent in-flight collision with trees and a swamp. A factor in the accident was a reported loss of engine power for undetermined reasons.

Loss of control after landing following a collision with a flock of birds.

Failure of the hydraulic systems after takeoff for unknown reasons.

The right engine suffered a oil leak in flight following the failure of a hose due to poor maintenance. The following contributing factors were identified:
- Both pilots did not have sufficient experience nor training on this type of aircraft,
- The copilot was flying for this operator for the first time,
- The operator was unable to provide any maintenance documentation nor crew training documentation to investigators,
- Both engines were running at impact but with limited power,
- The right propeller was feathered at impact.

Findings:
- The pilot was appropriately licensed and rated for the flight.
- The pilotís previously unknown heart disease probably would not have made him unfit to hold his class 1 medical certificate.
- The pilotís ability to control the aircraft was probably not affected by the onset of any incapacitation associated with his heart condition.
- Although the pilot was experienced on the PA 31 type on VFR operations, his experience of IFR operations was limited.
- The pilot had completed a recent IFR competency assessment, which met regulatory requirements for recent instrument flight time.
- The aircraft had a valid Certificate of Airworthiness, and the scheduled maintenance which had been recorded met its airworthiness requirements.
- The return of the cabin heater to service by the operator, after the maintenance engineer had disabled it pending a required test, was not appropriate but was not a factor in the accident.
- The cabin heater was a practical necessity for IFR operations in winter, and the required test should have been given priority to enable its safe use.
- The 3 unserviceable avionics instruments in the aircraft did not comply with Rule part 135, and indicated a less than optimum status of avionics maintenance. However there was sufficient
serviceable equipment for the IFR flight.
- The use of cellphones and computers permitted by the pilot on the flight had the potential to cause electronic interference to the aircraftís avionics, and was unsafe.
- The pilotís own cellphone was operating during the last 3 minutes of the flight, and could have interfered with his glide slope indication on the ILS approach.
- The aircraftís continued descent below the minimum altitude could not have resulted from electronic interference of any kind.
- The pilotís altimeter was correctly set and displayed correct altitude information throughout the approach.
- There was no aircraft defect to cause its continued descent to the ground.
- The aircraftís descent which began before reaching the glide slope, and continued below the glide slope, resulted either from a faulty glide slope indication or from the pilot flying a localiser approach instead of an ILS approach.
- When the aircraft descended below the minimum altitude for either approach it was too far away for the pilot to be able to see the runway and approach lights ahead in the reduced visibility at the time.
- The pilot allowed the aircraft to continue descending when he should have either commenced a missed approach or stopped the aircraftís descent.
- The pilotís actions or technique in flying a high-speed unstabilised instrument approach; reverting to hand-flying the aircraft at a late stage; not using the autopilot to fly a coupled approach and, if intentional, his cellphone call, would have caused him a high workload and possibly overload and distraction.
- The pilotís failure to stop the descent probably arose from distraction or overload, which led to his not monitoring the altimeter as the aircraft approached minimum altitude.
- The possibility that the pilot suffered some late incapacity which reduced his ability to fly the aircraft is unlikely, but cannot be ruled out.
- If TAWS equipment had been installed in this aircraft, it would have given warning in time for the pilot to avert the collision with terrain.
- While some miscommunication of geographical coordinates caused an erroneous expansion of the search area, the search for the aircraft was probably completed as expeditiously as possible in difficult circumstances.

The pilot's incorrect positioning of the fuel tank selector to a nearly empty tank, which resulted in a loss of engine power due to fuel starvation, and subsequent emergency landing at an off airport site.

The event, triggered by a multiple impact with birds during take-off, was caused by the loss of control in flight of the aircraft, due to an aerodynamic stall during the return to the departure airport, which could not be recovered due to the reduced altitude available.
The following factors contributed to the event:
- The non-implementation of the procedure provided for in the Flight Manual for engine failure after V1, with particular reference to configuration control (undercarriage and flaps), thrust lever management, definition and achievement of safety altitude, maintenance of expected speeds,
- The lack of CRM, already detectable in the ground procedures phase, but significantly worsened as a result of the emergency,
- The lack of experience of FO, on its first flight of line training on the type of aircraft,
- The inadequacy of the measures and of the bird control activity in the manoeuvring area.

The pilot's encounter with a wind shear just after liftoff.