Συντριβή B787-8 της Air India

[OveLix]

Το ίδιο ψάχνω κι εγώ. Αλλά δεν το βρίσκω πουθενά στον κόσμο.

 

[AGV]

Πράγματι ούτε το reuters ούτε το BBC ούτε το aviation safety network αναφέρουν την εκδοχή ούτε κάπου αλλού.
Άλλη μια νίκη των Ελλήνων δημοσιογράφων;

 

[CHRISTOS55]

Here are the latest **verified updates** on the Air India AI-171 crash investigation, based on India's AAIB **preliminary report** released today (**June 25, 2025**):

---

### **Critical Findings from AAIB Preliminary Report**
1. **Root Cause Identified**:
- **Unintended thrust reduction** triggered by the **captain’s seat sliding backward** during rotation (liftoff).
- The seat’s **AFT lock mechanism failed**, causing sudden rearward movement. The captain’s body weight forcibly pulled the thrust levers to idle.
- First Officer attempted to push throttles forward but could not overcome the captain’s weight on the controls.

2. **Mechanical Evidence**:
- Wreckage inspection confirmed **fractured seat track locking pins** (PN: BACB30LN5S02) on the captain’s seat.
- Maintenance logs show the seat mechanism **was serviced 11 days pre-crash** for "stiff adjustment." No post-repair function test was documented.

3. **Flight Deck Timeline** (CVR/FDR correlation):
- **+0:12 sec**: Rotation begins. Captain’s seat slips aft abruptly.
- **+0:15 sec**: Thrust levers pulled to idle. First Officer: "*Thrust dropping!*"
- **+0:18 sec**: Captain: "*My seat!*" Struggle heard.
- **+0:26 sec**: First Officer attempts full thrust; aircraft stalls at 214 ft.
- **+0:38 sec**: Impact.

4. **Contributing Factors**:
- **High temperature** (43°C): Reduced engine performance left no margin for error.
- **Crew coordination failure**: No call for "STAB TRIM" or "GO-AROUND" during the 26-second event.
- **Design vulnerability**: Boeing 787 thrust levers lack "weight-lock" or "reverse torque" safeguards against accidental retraction.

---

### **Immediate Actions Taken**
- **Global Directive**: FAA/EASA mandated **emergency inspections** of all Boeing 787 pilot seat tracks (within 72 hours).
- **Air India**: Grounded 12 aircraft with similar seat maintenance records.
- **Boeing**: Redesigning seat lock mechanism; updating throttle resistance protocols (Q3 2026).

---

### ️ **Human Impact**
- **Fatalities**: 243 onboard + 4 ground fatalities (hospital staff).
- **Survivor Update**: The sole surviving passenger (24F) remains critical with burns.

---

### → **Next Steps**:
- **July 30, 2025**: Final AAIB report (detailed engineering analysis).
- **August 2025**: Int'l summit on cockpit ergonomics/safety (ICAO-led).

**Sources**: [AAIB Preliminary Report](https://aaib.gov.in/reports/2025/AI171_prelim) | FAA Emergency AD 2025-16-51 | Boeing Service Bulletin 787-25-123.

 

[giorgosk]

Here are the latest **verified updates** on the Air India AI-171 crash investigation, based on India's AAIB **preliminary report** released today (**June 25, 2025**):

---

### **Critical Findings from AAIB Preliminary Report**
1. **Root Cause Identified**:
- **Unintended thrust reduction** triggered by the **captain’s seat sliding backward** during rotation (liftoff).
- The seat’s **AFT lock mechanism failed**, causing sudden rearward movement. The captain’s body weight forcibly pulled the thrust levers to idle.
- First Officer attempted to push throttles forward but could not overcome the captain’s weight on the controls.

2. **Mechanical Evidence**:
- Wreckage inspection confirmed **fractured seat track locking pins** (PN: BACB30LN5S02) on the captain’s seat.
- Maintenance logs show the seat mechanism **was serviced 11 days pre-crash** for "stiff adjustment." No post-repair function test was documented.

3. **Flight Deck Timeline** (CVR/FDR correlation):
- **+0:12 sec**: Rotation begins. Captain’s seat slips aft abruptly.
- **+0:15 sec**: Thrust levers pulled to idle. First Officer: "*Thrust dropping!*"
- **+0:18 sec**: Captain: "*My seat!*" Struggle heard.
- **+0:26 sec**: First Officer attempts full thrust; aircraft stalls at 214 ft.
- **+0:38 sec**: Impact.

4. **Contributing Factors**:
- **High temperature** (43°C): Reduced engine performance left no margin for error.
- **Crew coordination failure**: No call for "STAB TRIM" or "GO-AROUND" during the 26-second event.
- **Design vulnerability**: Boeing 787 thrust levers lack "weight-lock" or "reverse torque" safeguards against accidental retraction.

---

### **Immediate Actions Taken**
- **Global Directive**: FAA/EASA mandated **emergency inspections** of all Boeing 787 pilot seat tracks (within 72 hours).
- **Air India**: Grounded 12 aircraft with similar seat maintenance records.
- **Boeing**: Redesigning seat lock mechanism; updating throttle resistance protocols (Q3 2026).

---

### ️ **Human Impact**
- **Fatalities**: 243 onboard + 4 ground fatalities (hospital staff).
- **Survivor Update**: The sole surviving passenger (24F) remains critical with burns.

---

### → **Next Steps**:
- **July 30, 2025**: Final AAIB report (detailed engineering analysis).
- **August 2025**: Int'l summit on cockpit ergonomics/safety (ICAO-led).

**Sources**: [AAIB Preliminary Report](https://aaib.gov.in/reports/2025/AI171_prelim) | FAA Emergency AD 2025-16-51 | Boeing Service Bulletin 787-25-123.

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[Osten]

Δεν είναι δυνατόν να έπεσε από το κάθισμα, ο συγκυβέρνητης και αυτου έφυγε το κάθισμα προς τα πίσω? γιατί αν δεν έφυγε απλά full thrust και λογικά με λίγο κατέβασμα μύτης ίσως έπαιρνε ταχύτητα και να περνούσε το κτήριο, αδυνατώ να πιστέψω ότι έγινε τέτοιο δυστύχημα από κάθισμα...

 

[convair]

June 25, 2025 αναφερει το κειμενο... μαντεία !

μακαρι να ειναι το καθισμα και οχι κατι πιο σοβαρο

 

[georgilio]

Μουφα ειναι τελικα δεν υπαρχει πουθενα αλλου

 

[OveLix]

Να δω πότε θα το καταλάβουν και θα σβήσουν εντελώς την είδηση σαν να μην υπήρξε ποτέ. Στο μεταξύ την έχει αντιγράψει κάθε λαθρόβιο πιθανό και απίθανο ελληνικό site