distress
51Distress and Diversion — The Distress and Diversion (D D) Frequency is an international standard radio frequency for aviation distress. Set on 121.500 MHz it is the frequency for reporting a Pan Pan or a Mayday call. It is used in uncontrolled airspace, where ATC… …
52distress call — /dəsˈtrɛs kɔl/ (say duhs tres kawl) noun 1. an international code sign indicating that the sender is in danger or difficulty, as Mayday or SOS. 2. any communication indicating distress: the police sent out a distress call for blood donors …
53Distress signal unit — A Distress Signal Unit, or D.S.U , is a piece of equipment used by firefighters while working in hazardous areas. Normally used in conjunction with breathing apparatus, it is a small, battery powered item attached to the breathing apparatus… …
54distress flag — any flag flown by a vessel to show that it is in distress, as an ensign flown at half mast or upside down. * * * …
55distress frequency — a radio frequency band reserved for emergency signals from aircraft or ships in distress. * * * …
56distress gun — Naut. a gun fired at one minute intervals as a signal of distress. [1815 25] * * * …
57Distress Price — When a firm chooses to mark down the price of an item or service instead of discontinuing the product or service altogether. A distress price usually comes about in tough market conditions when the sale of a particular product or service has… …
58distress frequency — The frequency used to indicate that there is an emergency or distress situation. Internationally, there are two aeronautical frequencies for this purpose: 121.5 MHz and 243.0 MHz …
59distress signal — A signal transmitted by an aircraft in distress. It could be transmitted on radio as Mayday or by light indications …
60distress price — A low sales price offered by a seller in financial or operational difficulty. A distress price is often established in relation to a seller’s *fixed costs, which must be covered if a seller is to continue as a *going concern …
