Airprox Reports (13) including near miss (2) and TCAS RA (1)

Occurrence Reports (82)

Engine Failures (22), including rough running, chip detector (heli) and return to land.  Lycoming 10, Continental 3, Rotax 3, TAE125 1, Austro 2, Jet 1, other 2
Airborne Collision (1), glider with UAS, no fatalities
Landing Accidents (3)
Take-off Accidents (1) 
Take-off without Clearance (2)
Runway Excursions (6)
Runway Incursions (3)
Tyre Failures (-)
Landing Gear (-)
Maintenance Reports (11)
Taxiing Events (10) of which (6) were collisions with an aircraft or object
Loss of Coms (3)
IFR Level Bust (6)
VFR Level Bust (2), exceeding not above altitude
Loose Engine Cowling (2)
CO warning (2)
Engine Fire on Start (1)
Alternator Failure (2)
ATC Coordination of IFR GA Flights (2)
Fuel Leak in Flight (1)
Bird Strike (2)

Airspace Infringements (63)

T indicates areas where training could be improved effectively.  S suggests that systemic improvements could be implemented.  In 10 cases IFR traffic was affected i.e. delayed, descent stopped or vectored around the infringer.

Various contributory factors were:

Inadequate planning (6).T
Weather Factors, including turbulence (-)
Transponders Mode C faulty or over reading (6).One report explains that 9 key strokes are required which the pilot could not achieve in the turbulent conditions.  NB one error may mean starting again.  Some Mode S models are not really fit for use in aircraft for this reason. S
Lack of Knowledge (3); altimetry (1), autopilot use (2). T
Take Two (3). T
Misidentified surface features, lateral navigation error or misread the moving map (3).
Relative navigation (1)
Confusion of CAS bases (4), including moving map presentation. S
Chart obscuration or presentation () when reported or indicated.
Altimetry (2), Use of RPS (1), QFE (1). S2
Climbed too soon (2)
Descended too late (2)
North Weald Departures/ Arrivals (2). S
Moving map failure or not used (2). S
Farnborough CTR/CTA (2) S
Distractions (6) - Workload (1), instructing or task (1), tech problems (2), passengers (2)
Instrument scan (2).Lookout, Attitude, Instruments, particularly altimeter and VSI.Altitude keeping errors are often caused by failing to observe these instruments frequently T.
Frequency Monitoring Code not used or pilot not listening (3) T.
London FIS (4).Guidance as to when this service might be useful is required. S & T
Avoiding circuit traffic (2)
Glider infringements (1)
Misunderstood clearance (1)
Instructor on board (3) cases reported, student solo (2)
Request to transit STN CTR refused at the boundary (1)
Overflying Stapleford LTMA infringed (1)