# NTSB FTW74FQG24: Piper PA-25, N6623Z, Sylvester, TX, October 25, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 25, 1973
- Place: Sylvester, TX · SYLVESTER, TX
- Location: 32.7229° N, 100.2499° W: Placed by OpenAirDocs: center of Sylvester, TX, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.7229&lon=-100.2499&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 12, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 188217
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW74FQG24
- Page: https://openairdocs.org/ntsb/FTW74FQG24

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3293  73/10/25   SYLVESTER,TEX       PIPER PA-25         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 24, 1546
        TIME - 1130                    N6623Z              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 449 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ROBY,TEX                    SYLVESTER,TEX
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: SWATH RUN
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: SPRAY,DUSTING EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           AIRFRAME - FLIGHT CONTROL SURFACES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  450                       KIND OF OPERATION - DEFOLIATION (DUST)
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  ELEVATION-AREA BEING TREATED-FEET -  2000
          SWATH RUN-HOW FLOWN - UNKNOWN/NOT REPORTED
        REMARKS- ARSENIC ACID LEAKED ON R AILERON CABLE FROM TUBING.CABLE SEPARATED,LNDD IN COTTON FLD.
```

## Aircraft

- Registration: [N6623Z](https://openairdocs.org/deregistered/N6623Z-1981-07-22), registration cancelled 1981-07-22, S/N 25-2201 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19731025036079A](https://openairdocs.org/incident/19731025036079A), Oct 25, 1973: Piper PA25235, Sylvester, TX, Substantial damage. Arsenic acid leaked on r aileron cable from tubing. Cable separated,lndd in cotton fld.

## Other investigations on N6623Z (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW74DQG10](https://openairdocs.org/ntsb/FTW74DQG10), Aug 16, 1973: Piper PA-25 (N6623Z), Roby, TX, substantial damage
- [NTSB UNK64X1697](https://openairdocs.org/ntsb/UNK64X1697), May 10, 1964: Piper PA25 (N6623Z), Krum, TX, destroyed

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.