# NTSB Safety Recommendation P-77-026

**Citation:** P-77-026  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1977-09-27  
**Published:** 1977-09-27

ADVISE ITS MEMBER COMPANIES OF THE CIRCUMSTANCES OF THIS ACCIDENT AND URGE THEM TO KEEP ACCURATE RECORDS OF FACILITIES AND TO INSTRUCT MAINTENANCE CREWS IN THE IMPORTANCE OF VERIFYING THESE FACILITIES BEFORE WORKING ON THEM.

## Document text

NTSB safety recommendation P-77-026.

ADVISE ITS MEMBER COMPANIES OF THE CIRCUMSTANCES OF THIS ACCIDENT AND URGE THEM TO KEEP ACCURATE RECORDS OF FACILITIES AND TO INSTRUCT MAINTENANCE CREWS IN THE IMPORTANCE OF VERIFYING THESE FACILITIES BEFORE WORKING ON THEM.

Priority: CLASS II

Overall Status: Closed--No Longer Applicable

Issued Date: 1977-09-27

Adopted Date: 1977-09-16

Overall Date Closed: 1980-02-14

Synopsis: ON MAY 25, 1977, AN EXPLOSION AND FIRE DESTROYED A BUILDING AT 65-67 ARCH STREET IN GREENWICH, CONNECTICUT. TWO ADJACENT BUILDINGS WERE ALSO DESTROYED AND ANOTHER BUILDING WAS HEAVILY DAMAGED. FIREMEN EVACUATED RESIDENTS FROM A TWO-BLOCK AREA 30 MINUTES AFTER THE EXPLOSION. TEN PERSONS REQUIRED MEDICAL TREATMENT FOR INJURIES CAUSED BY THE ACCIDENT.

Ntsbnumber: DCA77FP024

Report Number: None

Addressee Name: American Gas Association

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1980-02-14

Addressee Acronym: AGA

Addressee Organization Type: A-Associations

Communication Date: 1980-02-14

Communication Type: Official Correspondence

Addressee Acronym: AGA

Addressee Organization Type: A-Associations

Communication Date: 1979-11-16

Communication Type: Official Correspondence

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-77-026>
- Source ID: `ntsb-pipeline`
- SHA-256: `8f624aaae45747d720608b00524be786f2426a7339ea939c6d0eae9681facd42`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-23T17:56:30.237Z
- Document slug: `ntsb-recommendation-p-77-026`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-77-026",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "DCA77FP024",
  "priority": "CLASS II",
  "overallStatus": "Closed--No Longer Applicable",
  "overallStatusAcronym": "CNLA",
  "overallDateClosed": "1980-02-14",
  "lastModifiedDate": "2026-03-19",
  "reportNumber": "None",
  "reportUrl": null,
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P77_26.pdf",
  "addressees": [
    {
      "addresseeName": "American Gas Association",
      "addresseeStatusAcronym": "CNLA",
      "addresseeStatus": "Closed--No Longer Applicable",
      "addresseeDateClosed": "1980-02-14",
      "addresseeDetails": [
        {
          "addresseeAcronym": "AGA",
          "addresseeOrganizationType": "A-Associations",
          "isFromNtsb": true,
          "communicationDate": "1980-02-14",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        },
        {
          "addresseeAcronym": "AGA",
          "addresseeOrganizationType": "A-Associations",
          "isFromNtsb": false,
          "communicationDate": "1979-11-16",
          "communicationType": "Official Correspondence",
          "communicationContents": ""
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```