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PLANE CRASH. Medical Plane. Doctors. Multiple Houses on FIRE. Philadelphia, Pennsylvania
- Thread starter jeff of pa
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Was Small LearJet
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- The Learjet 55 was on a medical mission from Northeast Philadelphia Airport to Springfield-Branson National Airport in Missouri.
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looks like it was already in flames 
Crow
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Frist of all my condolences to families that lost loved ones. The picture is blurry and my eyes are crap to start with looks to me the aircraft was in stall.
Judging on sound clip after pilot said thank you have a good day. he had gone into a stall. ( The pilot seems farway distracted )at low altitude you going to come down like a missile. )
Reading about the aircraft. There two stall warning systems that alert the pilot when the aircraft is approaching a stall. The systems use angle of attack vanes on the nose of the aircraft to detect when the angle of attack is too high.
When the aircraft is about 7% above a stall, the stall warning annunciator light flashes. When the aircraft is about 7% above a stall, the stick shaker activates. If the pilot ignores the stick shaker, the aircraft applies an intermittent forward push on the stick. When the aircraft is about 5% above a stall, the autopilot pitch servo applies an 80 pound push on the elevator.
They say The Learjet is small compared to other transport category aircraft and requires a certain degree of diligence flying one. It is based on a fighter type aircraft that Lear converted to a civilian transport. The training is intensive and must be adhered to in order to obtain your Learjet rating.
By the time the air tactic controller at North east control tower tried to contact him they was already dead. 2 seconds O32. They at night with virtual no situational awareness except instrumentation. Being on radio communicating at same time 030.
I suspect the pilot disorientated tried to fight the autopilot pitch servo applies an 80 pound push on the elevator. ( Air crash investigations did show how several airline pilots misinterpreted that procedure. they ended up pulling back against whats was saving them from a stall. )
Crow
Judging on sound clip after pilot said thank you have a good day. he had gone into a stall. ( The pilot seems farway distracted )at low altitude you going to come down like a missile. )
Reading about the aircraft. There two stall warning systems that alert the pilot when the aircraft is approaching a stall. The systems use angle of attack vanes on the nose of the aircraft to detect when the angle of attack is too high.
When the aircraft is about 7% above a stall, the stall warning annunciator light flashes. When the aircraft is about 7% above a stall, the stick shaker activates. If the pilot ignores the stick shaker, the aircraft applies an intermittent forward push on the stick. When the aircraft is about 5% above a stall, the autopilot pitch servo applies an 80 pound push on the elevator.
They say The Learjet is small compared to other transport category aircraft and requires a certain degree of diligence flying one. It is based on a fighter type aircraft that Lear converted to a civilian transport. The training is intensive and must be adhered to in order to obtain your Learjet rating.
By the time the air tactic controller at North east control tower tried to contact him they was already dead. 2 seconds O32. They at night with virtual no situational awareness except instrumentation. Being on radio communicating at same time 030.
I suspect the pilot disorientated tried to fight the autopilot pitch servo applies an 80 pound push on the elevator. ( Air crash investigations did show how several airline pilots misinterpreted that procedure. they ended up pulling back against whats was saving them from a stall. )
Crow
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Crow
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We will properly know for sure as Lear jets, like most modern aircraft, are equipped with "black boxes," which are actually called Flight Data Recorders (FDR) and Cockpit Voice Recorders (CVR), and are mandatory for all certified aircraft, including private jets like Lear jets, to record critical flight data and cockpit audio for accident investigation purposes.
Crow
Crow
Crow
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A "Learjet 55 takeoff stall" refers to a situation where a Learjet 55 aircraft loses lift during takeoff, causing it to abruptly drop in altitude due to insufficient airspeed, typically occurring when the pilot attempts to rotate (pitch up) too early or with too much weight at a low airspeed, often resulting in a dangerous situation requiring immediate corrective action.
Like any aircraft, the Learjet 55 has a critical angle of attack, which is the maximum angle at which the wings can produce enough lift to stay airborne. Exceeding this angle during takeoff can lead to a stall.
Pilot Error: Improper pilot technique, such as rotating too early, applying too much back pressure on the yoke, or not maintaining adequate airspeed during takeoff can cause a stall and High Pitch Attitude: The nose of the aircraft pitching up excessively
Here is clip of normal take off of a Learjet.
Correct pitch on take off.
Immediate Action to high pitch: Quickly lower the nose of the aircraft to regain airspeed by applying forward pressure on the controls. For some pilots it is counter intuitive and they pull back in panic. When the aircraft is about 5% above a stall, the autopilot pitch servo applies an 80 pound push on the elevator forward. Yet the pilot pulls back yoke.
But alas its easy said than done as you have mere second to react.
Crow
Like any aircraft, the Learjet 55 has a critical angle of attack, which is the maximum angle at which the wings can produce enough lift to stay airborne. Exceeding this angle during takeoff can lead to a stall.
Pilot Error: Improper pilot technique, such as rotating too early, applying too much back pressure on the yoke, or not maintaining adequate airspeed during takeoff can cause a stall and High Pitch Attitude: The nose of the aircraft pitching up excessively
Here is clip of normal take off of a Learjet.
Correct pitch on take off.
Immediate Action to high pitch: Quickly lower the nose of the aircraft to regain airspeed by applying forward pressure on the controls. For some pilots it is counter intuitive and they pull back in panic. When the aircraft is about 5% above a stall, the autopilot pitch servo applies an 80 pound push on the elevator forward. Yet the pilot pulls back yoke.
But alas its easy said than done as you have mere second to react.
Crow
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