Airprox Reports (8)

AAIB Reports

Pilots, engineers and operators of Cessna 150 aircraft with Continental 0-240 engines may wish to read AA!B report 27552 which identifies multiple cylinder base stud failures on 5 different aircraft.  A Service Bulletin should follow.

 An airspeed indicator in common use makes confusion of MPH indicated with large characters on the outer scale with knots in a smaller print on the inner easily possible.  This could have been a factor in a serious PA28 landing accident; AAIB-28530 refers.



Occurrence Reports

Engine Failures (6) including vibration, rough running and propeller.

Landing Accidents (2)

Runway Excursions (4)
Runway Incursions (5)
Wrong Runway (1)
Tyre Failures (2)
Maintenance Reports (4)
Taxiing Events (10)
Pitot Covers, chocks, towbar, filler caps (1), towbar attached.
Loss of Comms (5)
Electrical Problem, Alternator or Battery Failure (3)
Taxi  Without Clearance(2)
IFR Level Bust (4)
Hatch/Door Opened in Flight (2)
Elevator Trim Failure (1)
Cockpit/cabin Smoke (1), 4 in C150/152 aircraft.
Landing Without Clearance or runway occupied (2)
Weather Emergencies (1)
Flight Control Problem (1), see elevator trim failure.
EFIS/Avionics Failure (5)
Lost after Sunset (1)
ATC Coordination of IFR GA Flights (4)
IFR Non-Compliance with Instructions (2)

Airspace Infringements (57) 

S suggests that systemic improvements could be implemented.  Various contributory factors were:
Inadequate planning.(3), including complete reliance on the moving map.
Weather Factors - avoidance (1).
Visually avoiding traffic (2) or TCAS / other conspicuity device.
Transponders over reading (6). S
Lack of Knowledge (-).
Climbing too early after flight beneath a CAS base (-).
Descending beneath CAS too late (1)
Take Two (2). S
Misidentified surface features, lateral navigation error or misread the moving map (1).
Flying too wide a circuit or turning too late after departure (-).
Confusion of CAS bases (6), including moving map presentation.S
Altimetry (1), failure to set 1013 at IFR level..
ATZ and gliding site infringements (4).
RA(T) (-) (S).
Danger Areas (4) S
Frequency congestion (EGCB) and ATC workload (1)
Wrong frequency selected (-).
Unfamiliar aircraft or avionics (-) S
Manchester LLR (3).S
North Weald Departures/ Arrivals (2) S
Moving map failure (4).
Farnborough CTR/EGLK circuit (2) S
Instructing or task (-)
Tech problems (4).
Passengers (1)
Student solo (3), Instructor on board (10).
Instrument scan (?).Lookout, Attitude, Instruments, particularly altimeter and VSI.Altitude keeping errors are often caused by failing to observe these instruments.
No moving map used (1) case identified.
TCAS RA (-).
London FIS or other inappropriate service.(2).Frequency Monitoring Code, pilot not listening.
Non-compliance with cleared route or not above altitude, (4)
High performance aircraft and complex departure (1)
Glider infringements (1)

Graham Smith