Originally Posted by CaptainMongo
The NAV lights on our fleet stay on all the time for safety. It is a company policy, one of many we exercise not required by FAR.
Hi CaptainMongo,
If you really believe you leave your NAV lights on for safety during daylight, then please point me towards an accident / incident report which was caused by the crew not displaying NAV lights between sunrise and sunset.
Here are a couple of incidents caused by "inappropriate use of weather radar".
https://www.skybrary.aero/index.php/...nt_Reports:_WX
"A343, en-route, mid North Atlantic Ocean, 2011 (On 22 July 2011 an Air France A340-300 en route over the North Atlantic at FL350 in night IMC encountered moderate turbulence following "inappropriate use of the weather radar" which led to an overspeed annunciation followed by the aircraft abruptly pitching up and gaining over 3000 feet in less than a minute before control was regained and it was returned to the cleared level. There Investigation concluded that "the incident was due to inadequate monitoring of the flight parameters, which led to the failure to notice AP disengagement and the level bust, following a reflex action on the controls.”)
A346, en route, eastern Indian Ocean, 2013 (On 3 February 2013, an Airbus A340 crew in the cruise in equatorial latitudes at FL350 in IMC failed to use their weather radar properly and entered an area of ice crystal icing outside the prevailing icing envelope. A short period of unreliable airspeed indications on displays dependent on the left side pitot probes followed with a brief excursion above FL350 and reversion to Alternate Law. Excessive vibration on the left engine then began and a diversion was made. The engine remained in use and was subsequently found undamaged with the fault attributed to ice/water ingress due to seal failure.)"