reversal procedure

A procedure designed to enable aircraft to reverse direction during initial approach segment of an instrument approach procedure. The sequence may include procedure turns or base turns (ICAO). There are three generally recognized maneuvers related to the reversal procedure, each with its own airspace characteristics:
i. A 45°/180° procedure turn. It starts at a facility or a fix and consists of a straight leg with track guidance [this may be limited by a radial or DME (distance-measuring equipment) distance]; a 45° turn; another straight leg with track guidance (this straight leg is timed; it is 1 min from the start of the turn for categories A and B aircraft and 1' 15” for categories C, D, and E aircraft); and a 180° turn in the opposite direction to intercept the inbound track. The 45°/180° procedure turn is an alternative to the 180°/260° procedure turn [described in (ii)] unless specifically excluded.
ii. A 180°/260° procedure turn. It starts at a facility or a fix and consists of a straight leg with track guidance (this leg may be timed or limited by a radial or DME distance), a 180° turn, and a 260° turn in the opposite direction to intercept inbound track. The procedure is an alternative to the 45°/180° procedure turn unless specifically excluded.
iii. A base turn. It consists of a specified outbound track and timing or DME distance from a facility followed by a turn to intercept the inbound track. The outbound track and the timing may be different for the various categories of aircraft. Where this is done, separate procedures are published.

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References in periodicals archive

Tests at Leeds Fertility Clinic in February found signs of her original sterilisation but reported "no evidence" of a reversal procedure.

My PS1,200 fertility op con; Mum's tears as docs find 'no sign' of sterilisation reversal

About 0.2% of women chose surgical tubal sterilisation request reversal procedure.[1],[2] The conventional reversal technique is microsurgical tubal anastomosis by laparotomy.

Reversal after laparoscopic sterilisation--a practical approach

? Doctor tries to reverse vasectomy Dr Vaswani told the patient he could reverse the vasectomy and Patient A signed a consent form for the reversal procedure. It is understood this was unsuccessful.

Diary of an accidental vasectomy; ... How the hell did op farce go so very wrong

In the subsequent sessions, the participants were exposed to the repeated reversal procedure.

Simple discrimination and reversal learning sets in typically developing young children

The delayed testing trial for the Recovery group involved a change of context relative to the context present during the reversal procedure, which favored the expression of the CR by re-activating the first excitatory CS-US association.

Spontaneous recovery of human spatial memory in a virtual water maze/Recuperacion espontanea de la memoria espacial en humanos en un laberinto virtual de agua

"Type three FGM makes it physically impossible to give birth and that is why we have to do a reversal procedure.

On the front line in the NHS battle against female genital mutilation; Heartlands Hospital deals with six cases of Female Genital Mutilation (FGM) a week. Crime Correspondent NICK MCCARTHY speaks to specialist FGM midwife Alison Byrne about how she helps victims across the UK and a new service at Birmingham Women's Hospital

This is why we developed a sex reversal procedure in the center," he said.

Holy mackerel! Tilapia like humans

Laparoscopic reversal has shown less morbidity and mortality in relation to open Hartmann's reversal procedure. The morbidity with open Hartmann's reversal is reported at 443% [27], and the mortality rate ranges from 4 to 10% [22].

Laparoscopic reversal of Hartmann's procedure: state of the art 20 years after the first reported case

It briefly recalls the tools used in the time reversal procedure:

Time reversal for soft faults diagnosis in wire networks

Following the reversal procedure Coun Ord spent time in the Intensive Care Unit of Gateshead's Queen Elizabeth Hospital before he was moved to a secluded room in Ward 9 after being struck down with MRSA.

A great man has been lost, and he shouldn't have been... Family claim leading councillor died as a result of hospital blunders after his op

The advertisement hopes to undermine the demand for FGM, and to popularise the reversal procedure. Thousands of reversal operations have been carried in Britain and demand is slowly growing.

Female genital mutilation in the OK challenged by offer of reversal

She was away for six months after the reversal procedure at Great Ormond Street Hospital in London.

Hannah is the guest of honour at Games