Continuous Duty Overnight

Continuous Duty Overnight

Continuous Duty Overnights (CDOs) are also referred to as "stand-ups", "naps", or "high-speeds" and is a scheduling practice used in regional airline operations to circumvent, or "outsmart" government flight crew minimum rest requirements. A few major airlines (such as Northwest) also use them.

A crew working a CDO will generally operate the last flight out at night, have on duty time on the ground (anywhere from 0-8 hours) at the destination and then operate the first flight back in the morning. Since the break between flights is not sufficient to qualify as a free from duty rest period, the crewmembers remain continuously on duty, even though they may have been provided with a hotel room for rest. Crew members would normally require 9 hours of consecutive rest for a scheduled flight time of less than 8 hours. [1]. Since crews can legally be kept on duty up to 16 hours the airlines use this to circumvent the Federal Aviation Administration's (FAA) minimum crew rest requirements by keeping the crew on duty for the entire night. Another factor is delays. Because of this set up; delays taken throughout the day that result in a delay the last flight (first flight of a CDO) do not impact the first flight the next day. It would simply reduced the amount of time the crew are on the ground.

The continuous duty overnight schedule could be flown 3-5 times consecutively (i.e., back-to-back). [2]


Examples of a CDO

Flight crew is to report to the airport at 2040 (8:40pm). Which means the crew will have to arrive earlier to park, clear airport security, and get to their operations office to check in. Then they would fly from 2147-0037 (2 hours 50 minute flight). Once at their destination they have 6 hours 13 minutes on the ground. In that time they have to ride to and check in (about 20 minutes) at the hotel. They would get to their hotel room about 0100 and have to be awake at 0530 (30 minutes to get ready) for the 0600 shuttle to the airport. Leaving the crew about 4 hours and 30 minutes of “rest”. A 0650 departure and 2 hour 18 minute return trip gets them at the gate at 0908. After unloading they would be released (still at the aircraft) at 0923. That is a total of 12 hours and 43 minutes on duty and 5 hours and 8 minutes of flying.

Flight crew would report at 2100, fly from 2200-2300, then "stand-up" on duty overnight from 2315-0515, then fly 0600-0700, followed by a rest period from 0700-1700. The flight crew would then report at 1700, fly 1800-1900, then "stand-up" on duty 1915-0115, and then fly 0200-0300. This example involves only one hour flight examples, a clear underestimation of actual flight times and number of segments that might typically be flown.

Other issues

Some crews are not provided a hotel by their airline or want to make the most of their time on the ground and resort to sleeping in the aircraft. Pilots take off their ties and hang up their shirts. "You don't want to look unprofessional after sleeping in an aircraft," another pilot said. "There are some people that bring sleeping bags and pillows and their own blankets so they don't have to use the airline blankets." In airline slang, this is called 'a camp out.' [3]

A Small Sampling of Incidents/Accidents from CDOs

Runway incursion at Cleveland Hopkins International [4]

Runway incursion at Baltimore-Washington International Airport [5]

Broke 10,000 speed restriction near DTW [6]

Takeoff from the wrong runway at La Crosse [7]

Crew taxied to the incorrect runway at Jacksonville [8]

Low altitude on an ILS approach at Akron-Canton [9]

Takeoff without clearance at Cincinnati [10]

Takeoff in the wrong aircraft at La Crosse [11]

Takeoff without required fuel at Atlanta [12]

Lined up to land on the wrong runway at Chicago O'Hare [13]

Runway incursion at Dallas Fort Worth [14]

Takeoff in the wrong aircraft in Denver [15]

Runway incursion at Kalamazoo [16]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • CDO — may refer to: * Collateralized debt obligation, a structured finance product * Central dense overcast, in a tropical storm * Cysteine dioxygenase, an enzyme * Connected Data Objects, a free implementation of a Distributed Shared Model on top of… …   Wikipedia

  • Residency (medicine) — Anesthesia residents being led through training with a patient simulator Residency is a stage of graduate medical training. A resident physician or resident (also called a house officer / senior house officer in the United Kingdom and several… …   Wikipedia

  • United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …   Universalium

  • Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …   Universalium

  • Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …   Universalium

  • Europe, history of — Introduction       history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …   Universalium

  • JERUSALEM — The entry is arranged according to the following outline: history name protohistory the bronze age david and first temple period second temple period the roman period byzantine jerusalem arab period crusader period mamluk period …   Encyclopedia of Judaism

  • Presidential Unit Citation (United States) — Presidential Unit Citation Army and Air Force P.U.C …   Wikipedia

  • Italy — /it l ee/, n. a republic in S Europe, comprising a peninsula S of the Alps, and Sicily, Sardinia, Elba, and other smaller islands: a kingdom 1870 1946. 57,534,088; 116,294 sq. mi. (301,200 sq. km). Cap.: Rome. Italian, Italia. * * * Italy… …   Universalium

  • Sleep apnea — Classification and external resources Obstructive sleep apnea ICD 10 G …   Wikipedia