Lufthansa Flight DLH437
Airbus Industrie AE 340-300 · Incident: in flight encounter with weather en route
From George Bush Intercontinental Airport (IAH) to Dallas Fort Worth International Airport (DFW)
Event
- NTSB case
- FTW96IA389
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Incident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Airbus Industrie AE 340-300
- Aircraft type
- Airbus AE-340
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- DAIGK
- Operator
- Lufthansa
- Onboard fatalities
- Unknown
- Route
- From George Bush Intercontinental Airport (IAH), Houston, TXTo Dallas Fort Worth International Airport (DFW), DFW, TX
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 129: Foreign
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- En route · cruise
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- In flight encounter with weather
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Cause areas
- Passenger › Instructions, written/verbal, not followed
- Weather condition › Turbulence
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The captain reported that approximately 30 minutes after takeoff, while at FL280, the aircraft's airborne weather radar indicated a possible area of turbulence ahead. The captain turned on the seat belt sign. When the flight was 20 nautical miles north of Three Rivers, Texas (THX), the captain made an announcement over the public address (PA) system for the cabin attendants to take their seats. The flight encountered 'strong' turbulence, 30 nautical miles north of San Antonio, Texas, near HENLY intersection. A total of 8 passengers received minor injuries, 3 of which were infants (ages 3 months, 5 months, and 16 months). A severe turbulence inspection was performed and no aircraft damage was found.
Probable cause
turbulence, and failure of passengers to properly fasten their seat belts and properly hold lap children after the captain announced expected turbulence.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW96IA389
- Event ID
- 20001208X06717
- Case number
- FTW96IA389
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (5)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, damage. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: c0b8d7c42ac22d3c276389144e2ea9023f58784283809a2238c25d18228af3c8; retrieved 2026-09-18T17:46:28.565Z.
- The NTSB's operator name is blank for DAIGK; the operator shown is the name the NTSB records it doing business as.