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{{Short description|1969 aviation accident}}
{{Userspace notes}}

Catastrophe of An-24B of the Ukrainian UGA near Dnipropetrovsk
Type of incident: disaster
Date: 03 August 1969
Time:
Country: USSR
Place of incident: Ukrainian SSR, Dnipropetrovsk region, near the village. Preobrazhenka, Krinichansky district
Type of aircraft: An-24B
Aircraft Registration: USSR-46248
Airline: A
Division: Ukrainian CAA, Lviv JSC
Flight: H-826





Description

At 15:47 the crew took off in a / p Dnepropetrovsk. On board there were 51 passengers (including 9 children). The flight weight and alignment of the aircraft did not exceed the established standards. The weather at the point of take-off (cloudiness 4-6 cumulus, lower edge - 1,500 m, upper - 2,700 m. Visibility - 10 km) and along the route favored the flight.
At 15:58 the crew reported on the occupation of the echelon of 3,600 m and received the permission of the dispatcher SDP a / p Dnepropetrovsk to take a train of 4,200 m (the designated flight level along the route is 5,100 m). Not having received the report, the dispatcher at 16:06 called the crew to communicate. There was no answer. The aircraft was found to be completely destroyed on the ground, 58 kilometers from Dnepropetrovsk.




Information on the victims



On board Killed
Crew 4 4
Passengers 51 51
On the ground 0
Total deaths 55



Details of the incident



Incident Category catastrophe
Phase of flight climb
Established causes of AP
The organization that investigated the AP
Investigation report



Information about the aircraft



Type of aircraft An-24B
Registration number (id) Sun USSR-46248
State of registration of the sun the USSR
Date of issue 03/23/1967
Serial number of aircraft 77303206
Operating hours of the aircraft (hours) 4557
Operating time of the aircraft (cycles) 4789
Power point H 4712015 H4442042



Flight Information



Flight number H-826
Flight Category Regular passenger
Airline Aeroflot (USSR)
Subdivision Ukrainian UGA, Lviv
State of airline registration the USSR
Departure point Dneprop
Destination Vinnitsa
Starting point of the route Lugansk
End point of the route Lviv



Description of identified causes of AP The investigation found that at an altitude of about 4,000 m in the climb, a blade of No. 2 of the left propeller had broken off. There was an imbalance, as a result of which the left screw with a part of the reducer came off. Blade No. 2 punched the fuselage skin around 10-11 frames and interrupted the control rods of the rudders of height, direction and ailerons. The blades were found in the field 4.5 km from the place where the fuselage fell, and the propeller - 1 210 m from the blade and 4 km from the aircraft. The plane lost controllability and with the left bank moved into a decline. Then, with increasing speed and roll, he entered a deep spiral, made a half turn with a pitch angle of about -14 ° and a speed of 500-550 km / h and with the left bank collided with the earth at an angle of 45-50 ° and exploded.
Conclusions of the commission investigating the AP The main cause of the accident is the flight in flight of the blade of the blade No. 2 of the AV-72 propeller of the left propulsion system, with which the fuselage side was punched and the control rods were broken, resulting in an uncontrolled aircraft colliding with the ground.
According to the conducted studies, the blade breakage of the screw occurred due to mechanical fatigue in the presence of corrosion-type shells.
------------------------------------------------
*On Sunday, August 3, 1969 in the Krinichansk district of the Dnepropetrovsk region, crashed an An-24B crash of Aeroflot, resulting in the death of 55 people

*
*The plane was supposed to perform flight H-826 on the route Voroshilovgrad-Dnepropetrovsk-Vinnitsa-Lvov. Piloted his crew, consisting of the commander (KVS) VA Kapulovsky, second pilot V. V. Sinitsyn and flight mechanic V. N. Gavrilenko. In the cabin worked stewardess V. Ya. Hidden. At 15:47 the airliner left Dnepropetrovsk airport. On its board there were 51 passengers: 42 adults and 9 children [1].

*At this time, the weather conditions over the Dnipropetrovsk region were as follows: cloudiness 4-6 cumulus with the bottom edge of 1500 meters and the upper one - 2700 meters, visibility 10 kilometers. At 15:58 the crew reported to the dispatcher on the occupation of the train

*3600 meters (designated on the route - 5100 meters). In response, the controller gave permission to occupy the level of 4200 meters. The crew did not report on the occupation of this altitude, so at 16:06 the dispatcher himself tried to contact the board, but there was no answer

*An-24 passed the height of 4000 meters, when one of the blades (No. 2) came off on the left air screw and hit the fuselage around 10-11 frames. After breaking through the sheathing, she cut through the rods of controlling the rudders of height, direction and ailerons. Because of the imbalance, the left screw came off together with the gear unit part. Completely lost control

*the plane with the left bank began to decline, and then, as the speed and roll increased, began to enter a steep spiral. After making a one and a half turn, at about 4 pm the airliner, at an angle of 45-50 ° and at a speed of 500-550 km / h, crashed into the ground and exploded. An-24 fell in the Dnepropetrovsk region near the village of Preobrazhenka, Krinichansky district (according to other sources - near Vasilkovka settlement, Vasylkivsky district).

*A detached lobe was found 4.5 kilometers from the place where the plane fell, and the left screw was 1120 meters from the blade and 4 kilometers from the plane. All 55 people aboard the airliner died [1].

Reasons | edit the code]

The commission concluded that the blade separated due to mechanical fatigue in the presence of corrosive-type shells [1].
-------------------------------------

{{Infobox aircraft occurrence
{{Infobox aircraft occurrence
| name = Aeroflot Flight 826
| name = Aeroflot Flight N-826
| date = {{start date|1969|08|03}}
| date = {{start date|1969|08|03|df=y}}
| summary = Mechanical malfunction
| summary = Mechanical malfunction due to metal fatigue
| occurrence_type = Accident
| occurrence_type = Accident
| image = Antonov An-24B, IrAero AN1577030.jpg
| image = Antonov An-24B, Aeroflot AN1010693.jpg
| caption = An Antonov An-24B similar to accident aircraft
| caption = An Antonov An-24B similar to accident aircraft
| site = Preobrazhenka, [[Krynychky Raion]], [[Ukrainian SSR]]
| site = Krinichansk district of the Dnepropetrovsk region
| origin = [[Luhansk|Voroshilovgrad]]
| origin = [[Luhansk International Airport]]
| destination = [[Lviv]]
| destination = [[Lviv Danylo Halytskyi International Airport]]
| passengers = 51
| occupants = 55
| crew = 4
| passengers = 51
| fatalities = 55
| crew = 4
| injuries =
| fatalities = 55
| missing =
| injuries =
| survivors = 0
| missing =
| survivors = 0
| aircraft_type = [[Antonov An-24]]
| operator = [[Aeroflot]]
| aircraft_type = [[Antonov An-24]]
| operator = [[Aeroflot]]
| tail_number =CCCP-46248
| tail_number = CCCP-46248
}}
}}
On Sunday August 3, 1969 an [[Antonov An-24]] operating Aeroflot flight 826 crashed resulting in the death of all 55 people on board.
On Sunday 3 August 1969 an [[Antonov An-24]] operating '''Aeroflot Flight N-826''' ({{Lang-ru|Рейс N-826 Аэрофлота}} ''Reys N-826 Aeroflota'') crashed resulting in the death of all 55 people on board. An investigation revealed the cause of the accident was an in flight failure of the propeller attached to "No. 1" (left) engine.<ref>{{Cite web|url=https://www.baaa-acro.com/zone/zaporizhia-oblast|title=Zaporizhia Oblast {{!}} Bureau of Aircraft Accidents Archives|website=www.baaa-acro.com|language=en|access-date=2018-05-31}}</ref>


==Accident==
An investigation revealed the cause of the accident as in flight failure of the "No. 1" or left propeller.
Flight N-826 was a scheduled passenger flight from [[Luhansk|Voroshilovgrad]] to [[Lviv]] with stops at [[Dnipro|Dnipropetrovsk]] and [[Vinnytsia]]. At 15:47 the aircraft departed Dnipropetrovsk. At 15:58 the crew reported an altitude of 3,600 meters and received permission from ATC to climb to 4,200 meters. This was the last radio transmission from flight 826. While climbing through 4,000 meters, the number two propeller blade of the left engine separated from its hub and punctured the fuselage severing control rods for the ailerons and rudder rendering the Antonov uncontrollable. Because of the imbalance, the left air screw was detached. The aircraft then banked to the left and entered a descent with its airspeed increasing. After a steep spiral, the airliner struck the ground at an angle of 45-50 degrees and at a speed of 500-550 km/h. At 16:06 ATC tried to communicate with flight 826 but received no answer. All further attempts at communication with the AN-24 were unsuccessful.<ref name=avasf>{{Cite web|url=https://aviation-safety.net/database/record.php?id=19690803-1|title=Accident description Sunday 3 August 1969 |website=aviation-safety.net|access-date=2018-05-22}}</ref>


==Aircraft==
==Aircraft==
The aircraft involved was an Antonov An-24B, serial number 77303206 and registered as CCCP-46248. The airliners production date was March 23, 1967 and at the time of the crash, it had a total of 4557 flight hours with 4789 landings..<ref name=airu>{{Cite web|url=http://www.airdisaster.ru/database.php?id=685|last=|first=|date=|website=airdisaster.ru|language=ru|archive-url=|archive-date=|dead-url=|access-date=2018-05-13}}</ref>
The aircraft involved was an Antonov An-24B, serial number 77303206 and registered as CCCP-46248. The airliners production date was 23 March 1967 and at the time of the crash, it had a total of 4,557 flight hours with 4,789 landings.<ref name=":0">{{Cite web|url=http://www.airdisaster.ru/database.php?id=685|title=Катастрофа Ан-24Б Украинского УГА в районе Днепропетровска|website=airdisaster.ru|language=ru|access-date=2018-05-31}}</ref>


==Accident==
Flight 826 was a scheduled passenger flight from Voroshilovgrad to Lviv with stops at [[Dnipro|Dnipropetrovsk]] and [[Vinnytsia]]. At 15:47 the aircraft departed Dnipropetrovsk. At 15:58 the crew reported an altitude of 3,600 m and received permission from ATC to climb to 4,200 m. This was the last radio transmission from flight 826. While climbing through 4,000 m, the "no 2" propeller blade of the left engine separated from its hub and punctured the fuselage severing control rods for the ailerons and rudder rendering the Antonov uncontrollable The aircraft then banked to the left and entered a decent with its airspeed increasing. After a steep spiral The airliner struck the ground at an angle of 45-50 degrees and at a speed of 500-550 km/h. At 16:06 ATC tried to communicate with the aircraft and failed. All further attempts at communication with the AN-24 were unsuccessful.


==Investigation==
==Investigation==
Investigators discovered the propeller blade failed due to mechanical fatigue and the presence of a corrosive material.
Investigators discovered the propeller blade failed due to mechanical fatigue and the presence of a corrosive material.<ref name=":0" />


==See also==
==See also==
Line 157: Line 36:
*[[Aeroflot accidents and incidents in the 1960s]]
*[[Aeroflot accidents and incidents in the 1960s]]
{{Portal bar|Soviet Union|Aviation|1960s}}
{{Portal bar|Soviet Union|Aviation|1960s}}

==References==
{{Reflist}}

{{Aeroflot}}

{{Aviation accidents and incidents in 1969}}
{{Aviation accidents and incidents in the Soviet Union}}
{{Aviation accidents and incidents in Ukraine}}

[[Category:Aviation accidents and incidents in the Soviet Union]]
[[Category:Aviation accidents and incidents in 1969]]
[[Category:1969 in the Soviet Union]]
[[Category:Aeroflot accidents and incidents|N-826]]
[[Category:1969 in Ukraine]]
[[Category:Accidents and incidents involving the Antonov An-24]]
[[Category:Airliner accidents and incidents caused by mechanical failure]]
[[Category:Aviation accidents and incidents in Ukraine]]
[[Category:History of Dnipropetrovsk Oblast]]

Latest revision as of 19:23, 7 April 2024

Aeroflot Flight N-826
An Antonov An-24B similar to accident aircraft
Accident
Date3 August 1969 (1969-08-03)
SummaryMechanical malfunction due to metal fatigue
SitePreobrazhenka, Krynychky Raion, Ukrainian SSR
Aircraft
Aircraft typeAntonov An-24
OperatorAeroflot
RegistrationCCCP-46248
Flight originLuhansk International Airport
DestinationLviv Danylo Halytskyi International Airport
Occupants55
Passengers51
Crew4
Fatalities55
Survivors0

On Sunday 3 August 1969 an Antonov An-24 operating Aeroflot Flight N-826 (Russian: Рейс N-826 Аэрофлота Reys N-826 Aeroflota) crashed resulting in the death of all 55 people on board. An investigation revealed the cause of the accident was an in flight failure of the propeller attached to "No. 1" (left) engine.[1]

Accident[edit]

Flight N-826 was a scheduled passenger flight from Voroshilovgrad to Lviv with stops at Dnipropetrovsk and Vinnytsia. At 15:47 the aircraft departed Dnipropetrovsk. At 15:58 the crew reported an altitude of 3,600 meters and received permission from ATC to climb to 4,200 meters. This was the last radio transmission from flight 826. While climbing through 4,000 meters, the number two propeller blade of the left engine separated from its hub and punctured the fuselage severing control rods for the ailerons and rudder rendering the Antonov uncontrollable. Because of the imbalance, the left air screw was detached. The aircraft then banked to the left and entered a descent with its airspeed increasing. After a steep spiral, the airliner struck the ground at an angle of 45-50 degrees and at a speed of 500-550 km/h. At 16:06 ATC tried to communicate with flight 826 but received no answer. All further attempts at communication with the AN-24 were unsuccessful.[2]

Aircraft[edit]

The aircraft involved was an Antonov An-24B, serial number 77303206 and registered as CCCP-46248. The airliners production date was 23 March 1967 and at the time of the crash, it had a total of 4,557 flight hours with 4,789 landings.[3]

Investigation[edit]

Investigators discovered the propeller blade failed due to mechanical fatigue and the presence of a corrosive material.[3]

See also[edit]

References[edit]

  1. ^ "Zaporizhia Oblast | Bureau of Aircraft Accidents Archives". www.baaa-acro.com. Retrieved 2018-05-31.
  2. ^ "Accident description Sunday 3 August 1969". aviation-safety.net. Retrieved 2018-05-22.
  3. ^ a b "Катастрофа Ан-24Б Украинского УГА в районе Днепропетровска". airdisaster.ru (in Russian). Retrieved 2018-05-31.
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