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Last updated: 9 August 2020
Status:Definitief
Datum:donderdag 15 november 2018
Tijd:13:30
Type:Silhouette image of generic DH8C model; specific model in this crash may look slightly different
de Havilland Canada DHC-8-315Q Dash 8
Luchtvaartmaatschappij:PAL Airlines
Registratie: C-FPAE
Constructienummer: 562
Bouwjaar: 2001
Aantal vlieguren:36072
Motoren: 2 Pratt & Whitney Canada PW123E
Bemanning:slachtoffers: 0 / inzittenden: 4
Passagiers:slachtoffers: 0 / inzittenden: 47
Totaal:slachtoffers: 0 / inzittenden: 51
Schade: Groot
Gevolgen: Repaired
Plaats:Stephenville International Airport, NL (YJT) (   Canada)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Wabush Airport, NL (YWK/CYWK), Canada
Vliegveld van aankomst:Deer Lake Airport, NL (YDF/CYDF), Canada
Vluchtnummer:1922
Beschrijving:
PAL Airlines flight 1922, a DHC-8-300 aircraft, en route to Deer Lake, NL (CYDF) with 47 passengers and 4 crew onboard had an indication of a potential nose landing gear issue.
At 10:57 local time, during the approach at Deer Lake, the flight crew selected the landing gear down; however, a weight on wheels caution light as well as advisory lights illuminated, indicating that the nose landing gear was not in the down-and-locked position. The flight crew executed a missed approach and entered a hold in order to troubleshoot the problem. At 12:02, the flight crew requested a diversion to Stephenville, Newfoundland and Labrador, and declared an emergency. At 12:30, the aircraft landed on runway 27 at Stephenville with the nose landing gear in a partially extended position. On touchdown, the nose landing gear fully collapsed, and the aircraft nose structure came into contact with the runway surface. The aircraft slid and came to a stop approximately halfway down the runway.
There were no injuries to passengers or crew.

Probable Cause:

Findings as to causes and contributing factors:
1. For undetermined reasons, a previous repair to the inner cylinder of the nose landing gear shock strut was not designated with a specific permanent marking as required by the approved component maintenance manual, resulting in the installation of a standard size bearing where an oversize bearing was required.
2. The reduced sealing force caused by the smaller-than-required bearing installation likely allowed the nose landing gear shock strut to leak.
3. The reduced hydraulic fluid volume, in addition to a possible nitrogen leak, reduced the internal static pressure of the nose landing gear shock strut and allowed it to partially compress when it was in the up position.
4. The airflow encountered in flight when the nose landing gear was lowered further compressed the nose landing gear shock strut and allowed the tires to impinge on the aft landing gear doors, thereby jamming the nose landing gear in a partially extended position.

Accident investigation:
cover
Investigating agency: TSB Canada
Status: Investigation completed
Duration: 1 year and 8 months
Accident number: A18A0088
Download report: Final report

Bronnen:
» http://vocm.com/news/plane-makes-emergency-landing-at-stephenville-airport/
» https://www.palairlines.ca/wp-content/uploads/2018/11/PAL-Airlines-Nose-Gear-Release-Nov-15-2018-En.pdf
» https://www.thewesternstar.com/news/regional/pilots-praised-for-emergency-landing-without-front-wheels-down-259710/
» https://www.cbc.ca/news/canada/newfoundland-labrador/plane-crash-stephenville-1.4906941

METAR Weather report:
09:00 UTC / local time:
CYDF 150900Z 29016G30KT 250V350 1 1/4SM -SN BLSN VV008 M03/M06 A2937 RMK SN8 PRESFR SLP950

10:00 UTC / local time:
CYDF 151000Z 28014G33KT 240V330 1 1/4SM -SN BLSN VV008 M04/M06 A2942 RMK SN8 /S03/ SLP966

10:42 UTC / local time:
CYDF 151042Z 29021G46KT 1/2SM -SN +BLSN VV006 M04/M06 A2944 RMK SN8 SLP972


Foto's

photo of DHC-8-315Q-Dash-8-C-FPAE
 

Video, social media

Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Wabush Airport, NL en Deer Lake Airport, NL bedraagt 773 km (483 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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