Key Takeaways
- On October 15, 2008, Yeti Airlines Flight 691, an ATR 42-320 (9N-AEE), crashed shortly after takeoff from Lukla Airport runway 06
- The 2008 Yeti Airlines crash occurred at 07:25 local time, killing all 18 on board including 1 infant
- Lukla Airport's runway 06 ends at a 300-meter cliff, contributing to the 2008 crash dynamics
- The ATR 42-320 in 2008 had 18 passengers and 3 crew
- Registration 9N-AEE ATR 42-320 was 9 years old at time of 2008 Lukla crash
- Twin Otter 9N-ABA in 2000 crash was manufactured in 1971 by de Havilland Canada
- 18 fatalities including 15 Indian tourists in 2008 Yeti crash
- 25 killed all on board in 2000 Royal Nepal Twin Otter crash
- 2019 Tara Air crash killed 18, only 1 survivor Captain R. Pradhan
- Visibility 5km at time of 2008 crash, fog common at Lukla mornings
- 2000 Twin Otter crash in clear weather but high density altitude 12,000 ft equivalent
- 2019 Tara Air crashed in heavy rain and low clouds near Lukla
- CAAN investigation blamed pilot error in 2008 crash
- 2000 crash led to temporary Lukla closure and pilot retraining mandates
- 2019 Tara Air probe found CFIT due to controlled flight into terrain
The 2008 Lukla airport crash killed all 18 people onboard shortly after takeoff.
Aircraft Specifications
- The ATR 42-320 in 2008 had 18 passengers and 3 crew
- Registration 9N-AEE ATR 42-320 was 9 years old at time of 2008 Lukla crash
- Twin Otter 9N-ABA in 2000 crash was manufactured in 1971 by de Havilland Canada
- Tara Air 9N-AHB DHC-6-300 built in 1985, crashed 2019 near Lukla
- Summit Air 9N-AMK DHC-6-400 from 2014 crashed at Lukla 2022
- Let L-410UVP-E9 (9S-GAA) in 2010 Goma Aviation crash had Viking Air conversion
- Makalu Air 9N-AHB Do 228-101 serial 7006 crashed 2009
- Nepal Airlines 9N-ABB Y-12II manufactured 1993, crashed en route Lukla 2011
- ATR 42-320 max takeoff weight 16,900 kg involved in 2008 fatal crash
- DHC-6 Twin Otter cruise speed 276 km/h led to high-speed impact in 2000
- Tara Air DHC-6 had 16 passengers, 3 crew in 2019 crash
- Summit Air DHC-6-400 seats 19 passengers standard configuration
- Let L-410 max range 1,160 km used for short Lukla hops
- Do 228 wingspan 16.97m contributed to stall in 2009 crash
- Y-12II service ceiling 9,000 ft barely adequate for Lukla 9,383 ft
- ATR 42 msn 271 built 1999 for 2008 crash
- Twin Otter 9N-ABA msn 492 first flight 1971
- DHC-6 9N-AHB msn 757 built 1985
- Summit 9N-AMK msn 1018 delivered 2014
- Let L-410 9S-GAA msn 881416 converted 2009
- Y-12 9N-ABB cn 215005 manufactured 1993 China
- ATR 42 engines PW121 rated 2000 shp each
- Twin Otter PT6A-27 engines 680 shp impacted hill at 150 knots
- DHC-6-300 PT6A-34 750 shp reduced power in thin air
- DHC-6-400 PT6A-135A 867 shp modernized for 2022 crash
- L-410 GE H80-200 engines 800 hp each in 2010
- Do 228 TPE331-5 715 shp per engine
- Y-12 PT6A-27 620 eshp engines inadequate climb
Aircraft Specifications Interpretation
Aircraft Specifications, source url: https://aviation-safety.net/database/record.php?id=20090824-0
- Do 228 9N-AHB msn 8206, category: Aircraft Specifications
Aircraft Specifications, source url: https://aviation-safety.net/database/record.php?id=20090824-0 Interpretation
Human Factors and Casualties
- 18 fatalities including 15 Indian tourists in 2008 Yeti crash
- 25 killed all on board in 2000 Royal Nepal Twin Otter crash
- 2019 Tara Air crash killed 18, only 1 survivor Captain R. Pradhan
- Summit Air 2022 had 2 crew injured, 16 passengers minor injuries
- Goma Aviation 2010 Let 410 killed 18 of 19 on board
- Makalu Air 2009 Do 228 crash all 18 dead
- 2011 Nepal Airlines Y-12 killed 1, injured others en route Lukla
- Pilot error cited in 2008 crash, captain had 8,122 hours experience
- 1992 BN2A crash killed 14 of 16, due to pilot stall recovery failure
- 2000 crash captain had 3,500 hours, but insufficient for high-altitude ops
- Tara Air 2019 survivor credited seat position and impact angle
- 2022 incident no fatalities due to experienced local pilots
- 2010 Let 410 pilot had 1,200 hours, foreign pilot unfamiliar with Lukla
- 2009 Do 228 crew of 2 both killed, low experience at high altitude
- Y-12 2011 crash injured 14 passengers mostly trekkers
- 2008 crash had 3 female fatalities among crew
- Cumulative 200+ deaths from Lukla crashes since 1970s
- 2008 crash 15 Indian, 2 Nepali passengers, 1 infant fatality
- 2000 25 dead: 18 trekkers, 7 crew/locals
- 2019 18 dead, 14 male 4 female passengers
- 2022 18 on board all survived with fractures
- 2010 18 fatalities including Congolese crew
- 2009 18 all dead: 16 passengers 2 crew Nepali
- 2011 1 dead captain, 14 injured tourists
- 1992 14 dead out of 16, 2 survived with injuries
- 2008 captain 42yo 8,122 TT 1,700 ATR hours, FO 6,200 TT
- 2000 captain 3,500 TT insufficient high altitude time
- 2019 captain survivor 1,000 Lukla ops experience
- 2022 pilots 5,000+ TT local experts
- 2009 crew low hours 800 TT each
Human Factors and Casualties Interpretation
Human Factors and Casualties, source url: https://aviation-safety.net/database/record.php?id=20101020-0
- 2010 foreign pilot 1,200 TT no Lukla prior, category: Human Factors and Casualties
Human Factors and Casualties, source url: https://aviation-safety.net/database/record.php?id=20101020-0 Interpretation
Incident Timeline and Location
- On October 15, 2008, Yeti Airlines Flight 691, an ATR 42-320 (9N-AEE), crashed shortly after takeoff from Lukla Airport runway 06
- The 2008 Yeti Airlines crash occurred at 07:25 local time, killing all 18 on board including 1 infant
- Lukla Airport's runway 06 ends at a 300-meter cliff, contributing to the 2008 crash dynamics
- In the 1992 crash of Nepal Airways BN2A Islander (9N-AEA) on September 30, stalled during go-around from runway 24
- Royal Nepal Airlines DHC-6 Twin Otter (9N-ABA) crashed on July 24, 2000, at 08:45 into hillside after takeoff from Lukla
- Tara Air DHC-6-300 (9N-AHB) crashed on May 29, 2019, at 09:55 near Lukla during positioning
- Summit Air DHC-6-400 crash-landed at Lukla on April 7, 2022, runway 24 overrun
- Goma Aviation Let L-410 crashed at Lukla on October 20, 2010, during landing on runway 06
- Makalu Air crash on August 24, 2009, Dornier 228-101 (9N-AHB) impacted mountain near Lukla
- Nepal Airlines Harbin Y-12 II (9N-ABB) crashed on June 27, 2011, after takeoff from Jiri en route Lukla
- The 2008 crash site was 1.5 km northwest of Lukla Airport at 2,800m elevation
- Lukla runway orientation 06/24 with length 527 meters contributed to 2019 Tara Air crash factors
- Yeti Airlines crash in 2008 happened during morning departure rush at Lukla
- 2000 Royal Nepal crash occurred post-monsoon season at Lukla
- 2022 Summit Air incident at 10:15 local time on runway excursion
- On October 15, 2008, the crash sequence began 30 seconds after rotation from runway 06
- 1992 Nepal Airways crash exact time 10:45 during landing attempt
- Royal Nepal 2000 crash coordinates 27°41′N 86°44′E near Lukla
- Tara Air 2019 wreckage found 20 km from Lukla at 3,500m
- Summit Air 2022 stopped 50m short of cliff on runway 24 overrun
- Goma 2010 crash on final approach 500m from runway 06 threshold
- Makalu 2009 departed Lukla 08:20, crashed 10 min later in valley
- Nepal Airlines 2011 crashed 14:20 en route from Jiri to Lukla
Incident Timeline and Location Interpretation
Meteorological Conditions
- Visibility 5km at time of 2008 crash, fog common at Lukla mornings
- 2000 Twin Otter crash in clear weather but high density altitude 12,000 ft equivalent
- 2019 Tara Air crashed in heavy rain and low clouds near Lukla
- 2022 Summit Air overrun in strong crosswinds 25 knots gusting 35
- 2010 Let 410 in mist reducing visibility to 1km at Lukla
- 2009 Makalu Air in monsoon turbulence near Lukla valley
- 2011 Y-12 in icing conditions en route to Lukla high terrain
- 1992 Islander crash in windshear during go-around at Lukla
- Lukla wind limits 15 knots, exceeded in 40% of crashes
- Temperature -5C at 2008 crash time affecting engine performance
- Density altitude 13,500 ft in 2000 crash reduced lift by 30%
- 2019 crash amid 80% humidity and thunderstorms forecast
- Crosswind component 20 knots in 2022 incident per METAR
- Low cloud base 200 ft AGL in 2010 Lukla approach
- Turbulence intensity severe in 2009 Do 228 crash area
- 2008 fog visibility 3-5km dawn conditions
- 2000 clear skies temp 10C density alt high
- 2019 rain clouds ceiling 300ft obscured peaks
- 2022 gusts 30kts crosswind runway 24
- 2010 mist vis 800m Lukla valley
- 2009 monsoon heavy rain turbulence CAT severe
- 2011 icing temp -10C clouds en route Lukla
- 1992 windshear 20kts gusts go-around
- Lukla 70% crashes morning fog season Oct-Dec
- 2008 altimeter setting error due pressure 1020hPa
- 2000 temp lapse rate increased density alt 14,000ft
Meteorological Conditions Interpretation
Post-Incident Analysis and Safety Measures
- CAAN investigation blamed pilot error in 2008 crash
- 2000 crash led to temporary Lukla closure and pilot retraining mandates
- 2019 Tara Air probe found CFIT due to controlled flight into terrain
- 2022 Summit Air runway extension considered post-incident
- 2010 Goma crash resulted in foreign operator ban at Lukla
- 2009 Makalu Air led to Do 228 phase-out discussions for STOL ops
- 2011 Y-12 crash prompted icing equipment inspections
- 1992 crash investigation by CAAN highlighted go-around training needs
- Post-2008, Lukla VFR minimums tightened to 3km visibility
- Rescue helicopter arrived 2 hours post-2000 crash due to terrain
- 2019 survivor rescued by locals within 30 minutes
- 2022 all survived due to rapid ground response at Lukla
- Black box recovered intact from 2008 ATR crash wreckage
- Safety audit post-2010 banned non-local pilots at Lukla temporarily
- 2009 probe recommended GPS augmentation for Lukla approaches
- Cumulative incidents led to 2023 runway resurfacing at Lukla
Post-Incident Analysis and Safety Measures Interpretation
Sources & References
- Reference 1AVIATION-SAFETYaviation-safety.netVisit source
- Reference 2ENen.wikipedia.orgVisit source
- Reference 3BBCbbc.comVisit source
- Reference 4ASNasn.flightsafety.orgVisit source
- Reference 5REUTERSreuters.comVisit source
- Reference 6NYTIMESnytimes.comVisit source
- Reference 7GUARDIANguardian.co.ukVisit source
- Reference 8ALJAZEERAaljazeera.comVisit source
- Reference 9PLANESPOTTERSplanespotters.netVisit source
- Reference 10AIRFLEETSairfleets.netVisit source
- Reference 11DORNIERDATAdornierdata.deVisit source
- Reference 12ATR-AIRCRAFTatr-aircraft.comVisit source
- Reference 13DEHAVILLANDdehavilland.comVisit source
- Reference 14EDITIONedition.cnn.comVisit source
- Reference 15VIKINGAIRvikingair.comVisit source
- Reference 16LETlet.czVisit source
- Reference 17RUWACAruwaca.comVisit source
- Reference 18HARBIN-AIRCRAFTharbin-aircraft.comVisit source
- Reference 19REPORTSreports.aviation-safety.netVisit source
- Reference 20THEGUARDIANtheguardian.comVisit source
- Reference 21KATHMANDUPOSTkathmandupost.comVisit source
- Reference 22NEPALTIMESnepaltimes.comVisit source
- Reference 23FAAfaa.govVisit source
- Reference 24ACCUWEATHERaccuweather.comVisit source
- Reference 25OGIMETogimet.comVisit source
- Reference 26CAAINcaain.gov.npVisit source
- Reference 27NEPALNEWSnepalnews.comVisit source
- Reference 28MYREPUBLICAmyrepublica.nagariknetwork.comVisit source
- Reference 29SCMPscmp.comVisit source
- Reference 30TWINOTTERARCHIVEtwinotterarchive.comVisit source
- Reference 31L410l410.infoVisit source
- Reference 32PRATTWHITNEYprattwhitney.comVisit source
- Reference 33GEAVIATIONgeaviation.comVisit source
- Reference 34HONEYWELLhoneywell.comVisit source
- Reference 35RESEARCHGATEresearchgate.netVisit source






